YO

Yutaka Ohsawa

PE Pentax: 19 patents #83 of 761Top 15%
HO Hoya: 5 patents #232 of 1,290Top 20%
PE Pentax: 2 patents #187 of 396Top 50%
PC Pentax Ricoh Imaging Company: 2 patents #27 of 74Top 40%
AK Asahi Kogaku Kogyo K.K.: 1 patents #76 of 180Top 45%
Overall (All Time): #132,196 of 4,157,543Top 4%
29
Patents All Time

Issued Patents All Time

Showing 1–25 of 29 patents

Patent #TitleCo-InventorsDate
9152011 Diaphragm control apparatus of interchangeable lens camera Toshiaki Yamada, Kosei Kosako 2015-10-06
8159601 Sequential shooting controller Shinichi Kakiuchi, Shigeru Iwamoto 2012-04-17
7974530 Diaphragm control apparatus of interchangeable lens camera Toshiaki Yamada, Shinichiro Sanada, Kosei Kosako, Hirotaka Ueno 2011-07-05
7970274 Diaphragm control apparatus of interchangeable lens camera Toshiaki Yamada, Shinichiro Sanada, Kosei Kosako, Hirotaka Ueno 2011-06-28
7970273 Diaphragm control apparatus of interchangeable lens camera Toshiaki Yamada, Shinichiro Sanada, Kosei Kosako, Hirotaka Ueno 2011-06-28
7555212 Battery check device Hiroyuki Takahashi 2009-06-30
7542092 Digital camera with a battery checking device 2009-06-02
7313323 Camera system with a photometering device and an external operating device Tadahisa Ohkura, Shigeru Iwamoto, Hiroyuki Takahashi 2007-12-25
7035536 Flash control mechanism Tadahisa Ohkura, Shigeru Iwamoto, Takuya Hasegawa 2006-04-25
6351605 Remote control, auto-focus camera system Mikio Ogi 2002-02-26
6167205 Data-imprinting camera Kiyoshi Kawano 2000-12-26
6157785 Roll-film camera Kiyoshi Kawano 2000-12-05
6122451 Setting apparatus for camera Tadahisa Ohkura 2000-09-19
5887210 Camera having motor driven mechanism Toshiyuki Kitazawa 1999-03-23
5621495 Representation of depth of field in camera Masato Yamamoto, Toshimasa Yamanaka, Masahiro Nakajima 1997-04-15
5510875 Representation of depth of field in camera Masato Yamamoto, Toshimasa Yamanaka, Masahiro Nakajima 1996-04-23
5467200 Data communication method between circuits Isamu Hashimoto 1995-11-14
5365350 Data communication method between circuits Masahiro Kawasaki, Teruhiko Naruo, Isamu Hashimoto 1994-11-15
5283663 Data communication method between circuits Masahiro Kawasaki, Teruhiko Naruo, Isamu Hashimoto 1994-02-01
5034769 Interchangeable camera and interchangeable flash device Satoshi Takami, Teruhiko Naruo 1991-07-23
5025276 Control apparatus of single-lens reflex camera Toshiyuki Kitazawa, Masahiko Kurosaki 1991-06-18
5019852 Representation of depth of field in camera Masato Yamamoto, Toshimasa Yamanaka, Masahiro Nakajima 1991-05-28
4999661 Camera having selective functions Fuminori Ueno 1991-03-12
4933704 Electric power supply control device for camera Satoshi Takami 1990-06-12
4872069 Electric power supply control device for camera Satoshi Takami 1989-10-03