HS

Hirofusa Shirai

Tdk: 6 patents #953 of 3,796Top 30%
UN Unknown: 6 patents #2,010 of 83,584Top 3%
SC Sankyo Seiki Mfg. Co.: 1 patents #107 of 244Top 45%
TC Taisho Pharmaceutical Co.: 1 patents #275 of 557Top 50%
Overall (All Time): #521,950 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
7196240 Method and equipment for making polychlorobiphenyl nontoxic Mutsumi Kimura, Kenji Hanabusa, Kunihiro Hamada, Toshihiro Hirai 2007-03-27
5922743 Pyridine derivative Kenji Hanabusa, Yuki Takahashi, Fumio Mizobe, Kazunori Hanada 1999-07-13
5828795 Sealing device for use in a motor Toshihiko Miyakoshi, Masato Gomyo, Toshihiro Kobayashi, Masamichi Hayakawa, Kenji Hanabusa 1998-10-27
5776576 Phthalaocyanine compound as a layer in optical recording medium Mutsumi Kimura, Toshiki Koyama, Kenji Hanabusa, Yuichi Kubota 1998-07-07
5763601 Naphthalocyanine compounds, naphthalocyanine polymers and method for making Mutsumi Kimura, Yuichi Kubota 1998-06-09
5633370 Naphthalocyanine compounds, naphthalocyanine polymers and method for making Mutsumi Kimura, Yuichi Kubota 1997-05-27
5618930 Phthalocyanine compound and method for making, nitro-substituted phthalocyanine compound, amino-substituted phthalocyanine compound, phthalocyanine-containing polymer and method for making, catalyst, and optical recording medium Mutsumi Kimura, Toshiki Koyama, Kenji Hanabusa, Yuichi Kubota 1997-04-08
5516900 Phthalocyanine compounds containing either a polymerizable vinyl group, a nitro group, or an amino group Mutsumi Kimura, Toshiki Koyama, Kenji Hanabusa, Yuichi Kubota 1996-05-14
5053464 Polyurethane containing metal phthalocyanine in the main chain Naomi Masuda, Tatsuya Hongu, Nobuhisa Tsutsumi 1991-10-01
4663084 Electroconductive compositions Kenji Hanabusa, Mitsutoshi Kitamura, Nobumasa Hojo, Okikazu Hirabaru 1987-05-05