KY

Keizaburo Yamaguchi

MI Mitsui Toatsu Chemicals, Incorporated: 56 patents #5 of 1,543Top 1%
MC Mitsui Chemicals: 2 patents #873 of 2,279Top 40%
JC Jujo Paper Co.: 1 patents #46 of 105Top 45%
Overall (All Time): #42,128 of 4,157,543Top 2%
58
Patents All Time

Issued Patents All Time

Showing 51–58 of 58 patents

Patent #TitleCo-InventorsDate
4482742 Process for preparing of 3,3'-diamino diphenylsulfones Kenichi Sugimoto, Yoshimitsu Tanabe 1984-11-13
4453009 Process for producing fluorobenzophenone derivatives Akihiro Yamaguchi, Kenichi Sugimoto, Yoshimitsu Tanabe 1984-06-05
4407892 Heat sensitive recording sheet Akihiro Yamaguchi, Hisamichi Murakami 1983-10-04
4380671 Process for the preparation of 2,2'-bis(4-substituted phenol)sulfides Akihiro Yamaguchi, Tadashi Kobayashi, Hisamichi Murakami 1983-04-19
4312522 Heat sensitive recording sheet Akihiro Yamaguchi, Hisamichi Murakami 1982-01-26
4287366 Process for preparing bisphenol sulfone derivatives Akihiro Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi 1981-09-01
4275240 Process for the preparation of 2,2'-bisphenol sulfoxides Akihiro Yamaguchi, Hisamichi Murakami, Tadashi Kobayashi 1981-06-23
4260179 Color-developing sheet for pressure-sensitive recording sheets Akihiro Yamaguchi, Tadashi Kobayashi, Kisuke Osawa, Hisamichi Murakami, Noboru Yamato +1 more 1981-04-07