YD

Yoshihiko Doi

Sumitomo Electric Industries: 10 patents #2,734 of 21,551Top 15%
UN Unknown: 6 patents #2,010 of 83,584Top 3%
DE Denso: 1 patents #6,940 of 11,792Top 60%
TC Tokyo Tungsten Co.: 1 patents #16 of 27Top 60%
TB Toyoda Boshoku: 1 patents #41 of 112Top 40%
📍 Itami, JP: #221 of 1,436 inventorsTop 20%
Overall (All Time): #356,313 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
6739305 Oil pump for internal combustion engine and method of operating the same Toshihiro Takahara 2004-05-25
6518667 Semiconductor package using micro balls and production method thereof Akira Ichida, Hiroshi Yoshida, Masahiko Mizukami 2003-02-11
5928976 Composite carbide powder used for cemented carbide and method of producing the same Yoshiharu Yamamoto, Nobuaki Asada 1999-07-27
5262366 Formation of a ceramic composite by centrifugal casting Akira Yamakawa, Masaya Miyake 1993-11-16
4994418 Ceramic compact and a process for the production of the same Akira Yamakawa, Masaya Miyake 1991-02-19
4710345 Manufacturing method of super-heat-resisting alloy material Nobuhito Kuroishi, Shigeki Ochi, Noboru Uenishi 1987-12-01
4584171 Method of producing rocket combustors Masayuki Niino, Nobuyuki Yatsuyanagi, Akinaga Kumakawa, Akio Suzuki, Masaki Sasaki +8 more 1986-04-22
4582678 Method of producing rocket combustors Masayuki Niino, Akio Suzuki, Nobuyuki Yatsuyanagi, Akinaga Kumakawa, Masaki Sasaki +8 more 1986-04-15
4507189 Process of physical vapor deposition Yoshiki Maeda, Mitsunori Kobayashi 1985-03-26
4480013 Substrate for use in semiconductor apparatus Nobuo Ogasa, Akira Ohtsuka, Tadashi Igarashi 1984-10-30
4402994 Highly hard material coated articles Mitsunori Kobayashi 1983-09-06
4401297 Sintering furnace for powder metallurgy Toshikazu Hirayama, Yasushi Miyawaki, Masao Maruyama 1983-08-30
4401719 Highly hard material coated articles Mitsunori Kobayashi 1983-08-30
4383957 Method of sintering a ceramic composition Akira Yamakawa, Akira Doi 1983-05-17