WO

Wasaburo Ohta

Ricoh Company: 31 patents #601 of 9,818Top 7%
RC Ricoh Seiki Company: 2 patents #3 of 16Top 20%
Overall (All Time): #120,130 of 4,157,543Top 3%
31
Patents All Time

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDate
5465475 Method of forming a thin film magnetic head Mikio Kinoshita 1995-11-14
5427668 Thin film deposition system Tatsuya Sato, Mikio Kinoshita 1995-06-27
5368908 Optical information recording medium Isamu Orima, Masashi Nakazawa, Yuzi Onodera, Kazuhiro Umeki 1994-11-29
5250170 Gas sensor having metal-oxide semiconductor layer Shinji Yagawara 1993-10-05
5251202 Optical information recording medium having multi-layered structures for preventing undesired reflection and electric charging Yujiro Kaneko, Masashi Nakazawa, Michiaki Shinozuka, Isao Miyamoto, Hitoshi Nakamura +3 more 1993-10-05
5147523 Thin film gas sensor Shinji Yagawara 1992-09-15
5133849 Thin film forming apparatus Mikio Kinoshita, Tatsuya Sato, Masashi Nakazawa 1992-07-28
5114559 Thin film deposition system Masashi Nakazawa, Mikio Kinoshita 1992-05-19
5112466 Apparatus for forming a thin film Mikio Kinoshita, Tadao Katsuragawa 1992-05-12
5058527 Thin film forming apparatus Masashi Nakazawa 1991-10-22
5019885 Gas detecting device Shinji Yagawara 1991-05-28
5012671 Gas detecting device Shinji Yagawara 1991-05-07
5003812 Gas detecting device Shinji Yagawara, Junji Manaka 1991-04-02
4984446 Gas detecting device and gas detecting system using the same Shinji Yagawara, Junji Manaka 1991-01-15
4982696 Apparatus for forming thin film Mikio Kinoshita, Masashi Nakazawa 1991-01-08
4974544 Vapor deposition apparatus 1990-12-04
4967589 Gas detecting device Shinji Yagawara, Junji Manaka 1990-11-06
4966095 Apparatus for forming a thin film Masashi Nakazawa 1990-10-30
4960072 Apparatus for forming a thin film Mikio Kinoshita, Tadao Katsuragawa 1990-10-02
4947688 Flow velocity sensor Shinji Yagawara 1990-08-14
4876984 Apparatus for forming a thin film Mikio Kinoshita, Toru Miyabori 1989-10-31
4854265 Thin film forming apparatus Tadao Katuragawa, Mikio Kinoshita 1989-08-08
4818074 Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom Kenya Yokoi, Takamichi Enomoto, Fuyuhiko Matsumoto, Toru Miyabori, Akihiko Kanemoto +2 more 1989-04-04
4793691 Liquid crystal color display device Takamichi Enomoto, Kiyohiro Uehara, Sumio Kamoi, Fuyuhiko Matsumoto 1988-12-27
4772885 Liquid crystal color display device Kiyohiro Uehara, Takamichi Enomoto 1988-09-20