Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12149329 | Data encoding device, data transmission system, data encoding method, and data encoding program | — | 2024-11-19 |
| 11694532 | Fire alarm equipment | — | 2023-07-04 |
| 8773272 | Light scattering type smoke detector | — | 2014-07-08 |
| 7896544 | Heat detector and method of manufacturing heat detecting element | Manabu Dohi, Yoshimi Kawabata, Yasuo Ohmori | 2011-03-01 |
| 7802918 | Heat detector | Manabu Dohi, Yoshimi Kawabata, Yasuo Ohmori | 2010-09-28 |
| 7746239 | Light scattering type smoke detector | — | 2010-06-29 |
| 5859706 | Photoelectric smoke detector and disaster monitoring system using the photoelectric smoke detector | Naoki Kosugi, Yoshiki Ohmori | 1999-01-12 |
| 5670947 | Light scattering smoke sensor | — | 1997-09-23 |
| 5642099 | Light scattering type smoke detector | — | 1997-06-24 |
| 5587790 | Light scattering type smoke detector having an improved zero-point level | — | 1996-12-24 |
| 5576697 | Fire alarm system | Masato Aizawa | 1996-11-19 |
| 5502434 | Smoke sensor | Osami Minowa, Junichi Narumiya, Yoshihito Hirai, Mariko Ishida | 1996-03-26 |
| 5497009 | Photoelectric smoke sensor and fire detecting system, and sensitivity testing method therefor | Yasuo Torikoshi, Naoki Kosugi | 1996-03-05 |
| 5430307 | Light scattering smoke detector with smoke-entrance ladyrinth designed to prevent false signals due to reflection | — | 1995-07-04 |
| 5280272 | Fire alarm system which distinguishes between different types of smoke | Masato Aizawa | 1994-01-18 |
| 4914425 | Highly sensitive smoke detector | Yoshinori Kaminaka, Hiroshi Yashima, Satoru Koizumi, Yoshihito Hirai, Tetsuji Sato | 1990-04-03 |
| 4884222 | Fire alarm system | Eiji Matsushita, Sadataka Yuchi, Akira Kitajima | 1989-11-28 |
| 4644331 | Fire alarm system | Eige Matsushita | 1987-02-17 |
| 4596465 | Scattered light type smoke detector | — | 1986-06-24 |
| 4273684 | Transparent detergent bar | Yasunori Usuba, Takahisa Ogawa, Masahiro Takehara | 1981-06-16 |