YI

Yasuhisa Ishikura

TO Topcon: 6 patents #139 of 684Top 25%
Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
Overall (All Time): #324,435 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
8879069 Optical image measurement device Kazuyuki Okamura 2014-11-04
RE41503 Method of producing plasma display panel with protective layer of an alkaline earth oxide Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami +8 more 2010-08-17
7695139 Alignment method for ophthalmic measurement apparatus and alignment device of the same 2010-04-13
RE40871 Method of producing plasma display panel with protective layer of an alkaline earth oxide Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami +5 more 2009-08-18
RE40647 Method of producing plasma display panel with protective layer of an alkaline earth oxide Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami +5 more 2009-03-10
6817917 Manufacturing method for a plasma display panel with superior luminescence Hiroyuki Kado, Kanako Miyashita, Naoki Kosugi, Utaro Miyagawa, Shigeo Haruki 2004-11-16
6481848 Ophthalmologic apparatus Kunihiko Hara, Hiroshi Iijima 2002-11-19
6439943 Manufacturing method of plasma display panel that includes adielectric glass layer having small particle sizes Masaki Aoki, Katsuyoshi Yamashita, Shinya Fujiwara, Yasuyuki Akata 2002-08-27
6190012 Cornea shape measuring apparatus 2001-02-20
5993543 Method of producing plasma display panel with protective layer of an alkaline earth oxide Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami +5 more 1999-11-30
5770921 Plasma display panel with protective layer of an alkaline earth oxide Masaki Aoki, Hideo Torii, Eiji Fujii, Mitsuhiro Ohtani, Takashi Inami +5 more 1998-06-23
5751102 Monochromatic cathode ray tube having scattered electron suppressing layer Takaaki Tanaka, Masahide Yamauchi, Masaki Aoki 1998-05-12
5451835 Electron beam display device and production thereof Fumio Yamazaki, Yutaka Nishimura, Kinzo Nonomura 1995-09-19
5210555 Ocular refracting power measuring system Ikuo Kitao 1993-05-11
5071245 Ocular refracting power measuring system Yasufumi Fukuma, Akio Umeda, Ikuo Kitao, Noriyuki Nagai, Kazutoshi Uchida 1991-12-10