SY

Seiichi Yasukawa

NI Nikon: 40 patents #61 of 2,493Top 3%
NK Nippon Kogaku K.K.: 2 patents #156 of 382Top 45%
Overall (All Time): #74,105 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 1–25 of 42 patents

Patent #TitleCo-InventorsDate
6085040 Apparatus and method for controlling an amount of light emitted by an electronic flash device 2000-07-04
5899589 Camera Nobuaki Sasagaki 1999-05-04
5797048 Automatic focusing device which inhibits tracking drive control with a zoom lens having focus shift Yoshiharu Shiokama 1998-08-18
5749004 Option setting device and method of operating same for use with a camera 1998-05-05
5745704 Data communication control device 1998-04-28
5717961 Automatic focus adjustment device capable of accurately driving a photographic lens to an end point of movement 1998-02-10
5694625 Camera provided with an automatic focus adjusting apparatus Toshimi Watanabe 1997-12-02
5692118 Autofocus control device having moving body tracking control 1997-11-25
5687277 Motor drive control device which uses pulse width modulation to control the speed of a motor Makoto Matsuzaki 1997-11-11
5678078 Camera capable of communicating with an external device via communication contact points arranged in a cartridge compartment 1997-10-14
5652929 Camera having a through-the-lens automatic light adjustment control device 1997-07-29
5652925 Image sensor system and auto-focus detection device Hidehiko Aoyagi, Yosuke Kusaka 1997-07-29
5640626 Battery voltage detection device using pulse width modulation control Yutaka Makiyama 1997-06-17
5619300 Autofocus adjustment device and method Toshimi Watanabe 1997-04-08
5614982 Automatic focus adjustment device for adjusting a focus state of a camera lens regardless of subject stability 1997-03-25
5604561 Focus state detection device Masamitsu Ozawa 1997-02-18
5572281 Photo-taking apparatus capable of making a photograph with flash by a flash device Shinichi Suzuki, Toshihiro Sato, Tsutomu Narisawa 1996-11-05
5570148 Flash control apparatus Hideo Hibino, Hiroshi Sakamoto 1996-10-29
5530515 Control system for an apparatus using a microcomputer Takashi Saegusa 1996-06-25
5499075 Photometric apparatus for a camera Toshihiro Sato, Tadao Takagi 1996-03-12
5481326 Camera data communication device 1996-01-02
5450162 Photo-taking apparatus capable of making a photograph with flash by a flash device Shinichi Suzuki, Toshihiro Sato, Tsutomu Narisawa 1995-09-12
5422702 TTL auto flash control device 1995-06-06
5353093 Control system for an apparatus using a microcomputer Takashi Saegusa 1994-10-04
5305048 A photo taking apparatus capable of making a photograph with flash by a flash device Shinichi Suzuki, Toshihiro Sato, Tsutomu Narisawa 1994-04-19