Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7061699 | Projection lens, producing method of projection lens and projector having projection lens | Nobuo Watanabe, Shuji Narimatsu, Tomonobu Machida, Shohei Fujisawa | 2006-06-13 |
| 6989894 | Lens evaluation method and lens-evaluating apparatus | Masashi Kitabayashi, Koichi Kojima | 2006-01-24 |
| 6829111 | Projection lens manufacturing apparatus, projection lens manufacturing method, projection lens manufactured by the projection lens manufacturing method and projector having the projection lens | Shohei Fujisawa, Hirotatsu Okubo | 2004-12-07 |
| 6760097 | Lens evaluation method and lens-evaluating apparatus | Masashi Kitabayashi, Koichi Kojima | 2004-07-06 |
| 6760096 | Lens-evaluating method and lens-evaluating apparatus | Masashi Kitabayashi, Koichi Kojima | 2004-07-06 |
| 6674481 | Display apparatus, marker signal making process, marker signal detector circuit, and control signal generator circuit | Ichiro Sato, Katsuhiro Shimizu | 2004-01-06 |
| 6502932 | Print head device and ink jet printer including the print head device | — | 2003-01-07 |
| 6412933 | Ink cartridge device | Ayao Ogawa | 2002-07-02 |
| 6292216 | Control signal generating circuit | Katsuhiro Shimizu | 2001-09-18 |
| 6286946 | Ink cartridge device | Ayao Ogawa | 2001-09-11 |
| 6283587 | Printer ink cartridge and ink cartridge device including the same | — | 2001-09-04 |
| 6250745 | Ink cartridge for printers | Masahiko Chino | 2001-06-26 |
| 6244698 | Printhead unit and ink cartridge | Masahiko Chino, Kunihiko Matsuhashi | 2001-06-12 |
| 6220701 | Ink cartridge and method of disassembling the same | — | 2001-04-24 |
| 5926058 | Aperture compensation circuit and RGB monitor | — | 1999-07-20 |
| 5331352 | Contrast control wherein reference pulse detection occurs every other line period and wherein clamping occurs in remaining line periods | Hiroyuki Nakazono | 1994-07-19 |
| 4694330 | Color correction circuit | Yutaka Tanaka | 1987-09-15 |