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Seiichi Tokura

Seiichi Tokura

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 63 8447 7669 571 532 222 13767

Seiichi Tokura publications per year

The chart shows the history of publications by Seiichi Tokura between 1960 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Seiichi Tokura published across 62 years, from 1960 to 2021, averaging 3.7 papers a year. Output peaked at 13 publications in 1992. 3 of the 229 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1960 to 2021. Vertical axis: number of publications, 0 to 13. Peak 13 publications in 1992. 1960: 3 publications 1961: 1 publication 1962: 1 publication 1963: 1 publication 1964: 0 publications 1965: 1 publication 1966: 0 publications 1967: 0 publications 1968: 2 publications 1969: 0 publications 1970: 3 publications 1971: 2 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 3 publications 1978: 0 publications 1979: 4 publications 1980: 1 publication 1981: 2 publications 1982: 2 publications 1983: 6 publications 1984: 5 publications 1985: 2 publications 1986: 11 publications 1987: 9 publications 1988: 2 publications 1989: 8 publications 1990: 9 publications 1991: 7 publications 1992: 13 publications 1993: 13 publications 1994: 11 publications 1995: 10 publications 1996: 8 publications 1997: 8 publications 1998: 13 publications 1999: 7 publications 2000: 1 publication 2001: 5 publications 2002: 6 publications 2003: 6 publications 2004: 4 publications 2005: 2 publications 2006: 6 publications 2007: 3 publications 2008: 7 publications 2009: 7 publications 2010: 4 publications 2011: 4 publications 2012: 3 publications 2013: 0 publications 2014: 0 publications 2015: 0 publications 2016: 0 publications 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 2 publications 2021: 1 publication
1960 2021

229 publications in total across all disciplines

View publications per year as a table
Seiichi Tokura: publications per year, 1960 to 2021
Year Publications
1960 3
1961 1
1962 1
1963 1
1964 0
1965 1
1966 0
1967 0
1968 2
1969 0
1970 3
1971 2
1972 0
1973 0
1974 0
1975 0
1976 0
1977 3
1978 0
1979 4
1980 1
1981 2
1982 2
1983 6
1984 5
1985 2
1986 11
1987 9
1988 2
1989 8
1990 9
1991 7
1992 13
1993 13
1994 11
1995 10
1996 8
1997 8
1998 13
1999 7
2000 1
2001 5
2002 6
2003 6
2004 4
2005 2
2006 6
2007 3
2008 7
2009 7
2010 4
2011 4
2012 3
2013 0
2014 0
2015 0
2016 0
2017 0
2018 0
2019 0
2020 2
2021 1
Total 229
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Seiichi Tokura publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Seiichi Tokura sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 221–240 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 222 publications — 40th percentile

40% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216 222
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Seiichi Tokura D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Seiichi Tokura sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 62–63 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 63 D-Index — 54th percentile

54% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834 63
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Seiichi Tokura is affiliated with Hokkaido University in Japan and has a research focus that spans several interconnected fields including engineering, materials science, and biochemistry, genetics, and molecular biology. Their work primarily addresses topics within biomedical engineering and biomaterials, with subfields extending into molecular biology, rheumatology, and genetics.

The scientist's research contributions include studies on bone tissue engineering materials, electrospun nanofibers for biomedical applications, and investigations into enzymes such as chitinases and chitosanases. Additional topics covered in their work are bone and dental protein studies, connective tissue disorders research, collagen extraction and characterization, and marine biology and environmental chemistry.

Recent publications by Seiichi Tokura include the following papers:

  • Phosphorylated chitin increased bone formation when implanted into rat calvaria with the Ti-device, 2020, Bio-Medical Materials and Engineering
  • Discovery of Ti-Binding Abilities of Phosphorylated-Chitin and -Collagen, 2020, Journal of Hard Tissue Biology
  • Binding of collagen gene products with titanium oxide, 2020, The Journal of Biochemistry

Frequent coauthors collaborating with Seiichi Tokura have included:

  • Song Qin
  • Kimitoshi Yagami
  • Toshitake Furusawa
  • Masaaki Kurasaki
  • Yoshinori Kuboki

The preferred outlets for publication reflect specialization in biomedical and materials science disciplines, with key venues being:

  • Bio-Medical Materials and Engineering
  • Journal of Hard Tissue Biology
  • The Journal of Biochemistry

Best Publications

  • Impregnation of silver nanoparticles into bacterial cellulose for antimicrobial wound dressing

    Thawatchai Maneerung;Seiichi Tokura;Ratana Rujiravanit

  • Sulfated chitin and chitosan as novel biomaterials

    R. Jayakumar;N. Nwe;S. Tokura;H. Tamura

  • Novel carboxymethyl derivatives of chitin and chitosan materials and their biomedical applications

    R. Jayakumar;M. Prabaharan;S.V. Nair;S. Tokura

  • Immunological activity of chitin and its derivatives

    K. Nishimura;S. Nishimura;N. Nishi;I. Saiki

  • Effects of chitin and its derivatives on the proliferation and cytokine production of fibroblasts in vitro

    Takashi Mori;Masahiro Okumura;Mitsunobu Matsuura;Keisuke Ueno

  • Regioselective syntheses of sulfated polysaccharides: specific anti-HIV-1 activity of novel chitin sulfates

    Shin-Ichiro Nishimura;Hideaki Kai;Katsuhiko Shinada;Takashi Yoshida

  • Preparation of Chitin Hydrogel Under Mild Conditions

    Hiroshi Tamura;Hideaki Nagahama;Seiichi Tokura

  • Feasibility of polysaccharide hybrid materials for scaffolds in cartilage tissue engineering: evaluation of chondrocyte adhesion to polyion complex fibers prepared from alginate and chitosan.

    Norimasa Iwasaki;Shin-Tarou Yamane;Tokifumi Majima;Yasuhiko Kasahara

  • Chitosan coated cotton fiber: preparation and physical properties

    X.D Liu;N Nishi;S Tokura;N Sakairi

  • Chitosan-alginate multilayer beads for gastric passage and controlled intestinal release of protein

    Anil K Anal;Deepak Bhopatkar;Seiichi Tokura;Hiroshi Tamura

  • Stimulation of cytokine production in mice using deacetylated chitin.

    Keiko Nishimura;Chiaki Ishihara;Shigeki Ukei;Seiichi Tokura

  • Molecular Weight Dependent Antimicrobial Activity by Chitosan

    Seiichi Tokura;Keisuke Ueno;Satoshi Miyazaki;Norio Nishi

  • Studies on Chitin VIII. Some Properties of Water Soluble Chitin Derivatives

    Seiichi Tokura;Norio Nishi;Akihiro Tsutsumi;Oyin Somorin

  • Adjuvant activity of chitin derivatives in mice and guinea-pigs.

    Keiko Nishimura;Shin-ichiro Nishimura;Norio Nishi;Fumio Numata

  • Inhibition of the metastasis of murine malignant melanoma by synthetic polymeric peptides containing core sequences of cell-adhesive molecules

    Ikuo Saiki;Joji Iida;Jun Murata;Ryu Ogawa

  • Macrophage activation with multi-porous beads prepared from partially deacetylated chitin

    Keiko Nishimura;Shin-Ichiro Nishimura;Hiroshi Seo;Norio Nishi

  • Preparative methods of phosphorylated chitin and chitosan--an overview.

    R.a Jayakumar;N.a Selvamurugan;S.V.a Nair;S.b Tokura

  • Highly phosphorylated derivatives of chitin, partially deacetylated chitin and chitosan as new functional polymers: preparation and characterization☆

    Norio Nishi;Akira Ebina;Shin-ichiro Nishimura;Akihiro Tsutsumi

  • Novel chitosan-based hyaluronan hybrid polymer fibers as a scaffold in ligament tissue engineering.

    Tadanao Funakoshi;Tokifumi Majima;Norimasa Iwasaki;Shintaro Yamane

  • Bioactive chitin derivatives. Activation of mouse-peritoneal macrophages by O-(carboxymethyl)chitins

    Shin-Ichiro Nishimura;Norio Nishi;Seiichi Tokura;Keiko Nishimura

Frequent Co-Authors

Norio Nishi
Norio Nishi Hokkaido University
Shin-Ichiro Nishimura
Shin-Ichiro Nishimura Hokkaido University
Ichiro Azuma
Ichiro Azuma Hokkaido University
Hiroshi Tamura
Hiroshi Tamura Juntendo University
Ikuo Saiki
Ikuo Saiki University of Toyama
Keisuke Kurita
Keisuke Kurita Seikei University
Pitt Supaphol
Pitt Supaphol Chulalongkorn University
Susumu Nishimura
Susumu Nishimura University of Tsukuba
Yoshinori Kuboki
Yoshinori Kuboki Hokkaido University
Yoshihiro Shigemasa
Yoshihiro Shigemasa Tottori University

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