KY

Kazumasa Yokoyama

GC Green Cross: 69 patents #1 of 527Top 1%
IK Ishihara Sangyo Kaisha: 7 patents #52 of 403Top 15%
TC Taisho Pharmaceutical Co.: 3 patents #132 of 557Top 25%
YI Yoshitomi Pharmaceutical Industries: 3 patents #61 of 310Top 20%
KC Kissei Pharmaceutical Co.: 1 patents #115 of 202Top 60%
KC Kaken Pharmaceutical Co.: 1 patents #159 of 335Top 50%
MP Mitsubishi Pharma: 1 patents #59 of 202Top 30%
Overall (All Time): #24,513 of 4,157,543Top 1%
77
Patents All Time

Issued Patents All Time

Showing 26–50 of 77 patents

Patent #TitleCo-InventorsDate
5091417 Preventive and therapeutic agent for hepatitis Masahiro Watanabe 1992-02-25
5053498 Therapeutic and prophylactic agents for peptic ulcer Yusei Shiraga, Chikara Fukaya, Toshiaki Akira, Masakazu Iwai, Mamoru Tabata +5 more 1991-10-01
5036072 Antiviral agent Tsunetaka Nakajima, Tadao Okamoto, Masahiro Watanabe 1991-07-30
5002952 Readily absorbed pharmaceutical composition Nobuo Kondo, Tsunetaka Nakajima, Masahiro Watanabe, Takahiro Haga, Nobutoshi Yamada +2 more 1991-03-26
4983723 Cycloalkane derivatives Hitoshi Yasuda, Chikara Fukaya, Kanemichi Okano 1991-01-08
4983605 Pharmaceutical composition Nobuo Kondo, Masahiro Kikuchi, Tsunetaka Nakajima, Masahiro Watanabe, Takahiro Haga +3 more 1991-01-08
4983584 Therapeutic and prophylactic agents for peptic ulcers Chikara Fukaya, Hitoshi Yasuda, Toshiaki Akira, Masakazu Iwai, Kanemichi Okano 1991-01-08
4943595 Perfluorochemicals and process for preparing the same Kirby V. Scherer, Jr., Kouichi Yamanouchi, Ryoichi Naito 1990-07-24
4933329 Bis-S-alkylbenzene derivatives Youichiro Naito, Yasunari Yamaura, Masanori Sugiura, Chikara Fukaya 1990-06-12
4916130 Platelet agglutination-inhibiting agent Masakazu Iwai, Chikara Fukaya 1990-04-10
4910195 Dihydropyridine derivatives Atsuyuki Ashimori, Taizo Ono, Yoshihisa Inoue, Chikara Fukaya 1990-03-20
4904668 Benzoyl urea compound Nobuo Kondo, Masahiro Kikuchi, Tsunetaka Nakajima, Masahiro Watanabe, Takahiro Haga +3 more 1990-02-27
4888417 Therapeutic and prophylactic agents for peptic ulcer Yusei Shiraga, Chikara Fukaya, Toshiaki Akira, Masakazu Iwai, Mamoru Tabata +5 more 1989-12-19
4886819 Dihydropyridine derivatives and pharmaceutical composition thereof Atsuyuki Ashimori, Taizo Ono, Yoshihisa Inoue, Chikara Fukaya 1989-12-12
4868201 Indoleacetic acid derivatives used as anti-inflammatories Chikara Fukaya, Youichiro Naito, Shuichi Hanada, Masahiro Watanabe 1989-09-19
4868318 Perfluoro chemicals and polyfluorinated compounds Kirby V. Scherer, Jr., Taizo Ono, Kouichi Yamanouchi 1989-09-19
4849425 Readily absorbable pharmaceutical composition Nobuo Kondo, Tsunetaka Nakajima, Masahiro Watanabe, Tadakazu Suyama, Takahiro Haga +3 more 1989-07-18
4849404 Therapeutic and prophylactic agent for gastrointestinal ulcers Masakazu Iwai, Tsunekazu Fukushima 1989-07-18
4849429 Certain 1,4-dihydro-2,6-dilower-alkyl-4-(mono-substituted pyridyl) useful for treating coronary artery or cerebral artery disease Chikara Fukaya, Atsuyuki Ashimori, Taizo Ono 1989-07-18
4849451 Fat emulsion containing prostaglandin Yutaka Mizushima, Hironaka Aihara, Susumu Otomo, Hiroyuki Okamoto, Tadakazu Suyama 1989-07-18
4775743 Peptide derivatives Tsutomu Mimura, Yasuhiro Kohama, Chikara Fukaya, Masahiro Watanabe 1988-10-04
4748157 Composition for gastrointestinal ulcers Masakazu Iwai, Tsunekazu Fukushima 1988-05-31
4733002 Lipoxygenase inhibitor Chikara Fukaya, Masanori Sugiura, Youichiro Naito, Youichiro Nishida, Tadakazu Suyama 1988-03-22
4727077 Benzoyl urea compounds, process for their production, and antitumorous compositions containing them Takahiro Haga, Nobutoshi Yamada, Hideo Sugi, Toru Koyanagi, Nobuo Kondo +2 more 1988-02-23
4713459 Perfluoro compounds Chikara Fukaya, Yoshio Tsuda, Taizo Ono, Yoshio Arakawa, Tadakazu Suyama 1987-12-15