Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12276465 | Heat pump and heat pump unit using same | Masaki Togo, Toshihiro Wakabayashi | 2025-04-15 |
| 12055324 | Heat pump unit | — | 2024-08-06 |
| 8810713 | Image pickup apparatus and image pickup device for performing auto-focusing | Keigo Matsuo, Hisashi Goto, Yoshikazu Ichikawa, Ryuhi Okubo, Toshio Takahashi +1 more | 2014-08-19 |
| 8421813 | Display device and method of controlling display device | — | 2013-04-16 |
| 7317690 | Method of constructing network topology and interface circuit | Kenji Oi, Takashi Shimizu, Hirotaka Ueno | 2008-01-08 |
| 7307541 | Light output device, relay and program for controlling the light output device | Takumi Ikeda, Naoaki Yamamoto, Kazuhisa Watanabe, Tatsuo Yamamoto, Keiichi Koshiba | 2007-12-11 |
| 7233592 | Packet transfer control circuit | Kenji Oi, Takashi Shimizu, Hirotaka Ueno | 2007-06-19 |
| 7024380 | E-commerce system and method | Toshiki Kindo, Hideyuki Yoshida, Takehiko Shida | 2006-04-04 |
| 6598096 | Device and method for controlling packet transfer | Kenji Oi, Takashi Shimizu, Hirotaka Ueno | 2003-07-22 |
| 6198384 | System power supply control for interface circuit | Kenji Oi, Takashi Shimizu, Hirotaka Ueno | 2001-03-06 |
| 6185971 | Hot rolled material take-up equipment and take-up method | Hiroaki Kuwano, Hisashi Sato, Toshirou Matsushita, Toshio Imazeki, Taichi Kukizaki +2 more | 2001-02-13 |
| 6148351 | Method for data width conversion between a DMA controller and an interface unit with a bus width that is an integer multiple of the DMAC bus width | — | 2000-11-14 |
| 5825221 | Output circuit of semiconductor device | — | 1998-10-20 |
| 5640602 | Transferring digital data in units of 2 bytes to increase utilization of a 2-byte-wide bus | — | 1997-06-17 |
| 5581400 | Finder optical system with low-hygroscopic organic material | Tatsuru Kanamori, Masaki Imaizumi, Masaru Morooka | 1996-12-03 |
| 5563539 | Output buffer circuit changeable of the output signal from a low to a high impedance state | — | 1996-10-08 |
| 5495307 | Camera | Tamotsu Koiwai, Yukihiko Sugita | 1996-02-27 |
| 5321548 | Real image mode variable magnification finder optical system | — | 1994-06-14 |
| 5321546 | Switching variable magnification finder | — | 1994-06-14 |
| 4930881 | Image pickup optical system | Hisashi Goto, Takashi Inoue, Hidenori Sakurai, Akiteru Kimura | 1990-06-05 |
| 4913537 | Vari-focal lens system with switchable auxiliary lens units | — | 1990-04-03 |
| 4728179 | Rear conversion lens system | Hikaru HAYASHI | 1988-03-01 |
| 4715693 | Vari-focal photographic lens system of rear lens group exchange type | Masaki Imaizumi, Toru Fujii | 1987-12-29 |
| 4708442 | Varifocal lens system | Toru Fujii, Masaki Imaizumi | 1987-11-24 |
| 4668054 | Vari-focal photographic lens system of lens group exchange type | Masaki Imaizumi, Toru Fujii | 1987-05-26 |