RY

Ryoichi Yoshikawa

NT Nuflare Technology: 18 patents #18 of 298Top 7%
Canon: 13 patents #5,080 of 19,416Top 30%
TO Toshiba: 4 patents #258 of 2,688Top 10%
KT Kabushiki Kaisha Toshiba: 4 patents #6,684 of 21,451Top 35%
TC Toshiba Machine Co.: 1 patents #70 of 186Top 40%
NT Ntt Advanced Technology: 1 patents #43 of 188Top 25%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Overall (All Time): #79,619 of 4,157,543Top 2%
40
Patents All Time

Issued Patents All Time

Showing 26–40 of 40 patents

Patent #TitleCo-InventorsDate
4559603 Apparatus for inspecting a circuit pattern drawn on a photomask used in manufacturing large scale integrated circuits 1985-12-17
4558225 Target body position measuring method for charged particle beam fine pattern exposure system Mineo Gotou, Toru Tojo, Hirotsugu Wada 1985-12-10
4542974 Flash photography apparatus Kouichi Ohmori, Isao Watanabe 1985-09-24
4522479 Flash apparatus with power supply control device Masanori Yamada 1985-06-11
4466719 Wind-up device for camera Shosuke Haraguchi, Masanori Uchidoi, Yoshihiro Shigeta, Yoichi Tosaka 1984-08-21
4410252 Single lens reflex camera Yoshihiro Shigeta, Masanori Uchidoi, Yoichi Tosaka, Shosuke Haraguchi 1983-10-18
4410800 Electron beam exposure system 1983-10-18
4400073 Safety device for a camera with a winding motor Yoichi Tosaka, Masanori Uchidoi, Yoshihiro Shigeta, Shosuke Haraguchi 1983-08-23
4389111 Camera Masanori Uchidoi, Yoshihiro Shigeta, Yoichi Tosaka, Shosuke Haraguchi 1983-06-21
4361391 Film magazine holding device for camera Shosuke Haraguchi 1982-11-30
4322148 Information indicating device for single lens reflex camera with built-in flash unit 1982-03-30
4306784 Photographic camera with an operation mode display device Nobuo Tezuka, Masanori Uchidoi, Yukio Iura, Masami Shimizu, Hiroshi Aizawa 1981-12-22
4279494 Camera body Kazuhiko Okajima, Shunichi Nakahara, Sumio Nakayama 1981-07-21
4238151 Pentaprism mount assembly 1980-12-09
4181417 Shutter operation control device for a photographic camera Yoji Sugiura, Nobuo Tezuka, Uchidoi Masanori 1980-01-01