Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7154816 | Electronic watch and electronic watch control method | Kiyotaka Igarashi, Kenji Shimoda | 2006-12-26 |
| 6809705 | Small-sized electronic equipment | — | 2004-10-26 |
| 6760003 | Miniature electronic device | — | 2004-07-06 |
| 6661743 | Electronic device with display section | Masao Mafune, Kenji Fujita | 2003-12-09 |
| 6593901 | Electronic device | Isao Kitazawa, Tomio Okigami, Hiroshi Fujioka, Takashi Osa | 2003-07-15 |
| 6459657 | Time information repeating installation and time information control system | Akinari Takada, Kenji Fujita, Shinya Yoshida, Masahiro Tanoguchi, Kenichi Nemoto | 2002-10-01 |
| 6298014 | Time information management system | Hiroyuki Kihara, Toshio Umemoto, Tomomi Murakami | 2001-10-02 |
| 6288977 | Time signal repeater and time correction system using the same | Shinya Yoshida, Masahiro Tanoguchi, Kenichi Nemoto, Akinari Takada, Kenji Fujita | 2001-09-11 |
| 6219302 | Time signal repeater and time correction system using the same | Masahiro Tanoguchi, Kenichi Nemoto, Shinya Yoshida, Shunichi Makuta, Akinari Takada +1 more | 2001-04-17 |
| 6144621 | Charging type electronic timepiece | — | 2000-11-07 |
| 6060862 | Rechargeable electronic apparatus | Kiyotaka Igarashi, Kenji Fujita | 2000-05-09 |
| 5335211 | Display device by means of a hand | Takeo Muto, Kato Yoshiaki | 1994-08-02 |
| 5237544 | Analog world watch | Kiyotaka Igarashi, Takashi Osa, Noritoshi Suzuki | 1993-08-17 |
| 5119349 | Display device by means of a hand | Takeo Muto, Kato Yoshiaki | 1992-06-02 |
| 4972393 | Calendar display apparatus | Takeo Muto, Teruho Keida | 1990-11-20 |
| 4785436 | Photovoltaic electronic timepiece | — | 1988-11-15 |
| 4505594 | Multi-function analogue type watch | Hisashi Kawahara, Hiroyuki Kihara | 1985-03-19 |