Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12239867 | Sprinkler head | Masaharu Chiba, Yutaka Tateishi | 2025-03-04 |
| 12158444 | Gas sensor element and gas sensor | Takanori Ishikawa, Hiroshi Isomura | 2024-12-03 |
| D991399 | Deflector for sprinkler head | Masaharu Chiba, Yoshiki Sasaki | 2023-07-04 |
| D972079 | Sprinkler head | Masaharu Chiba, Yutaka Tateishi | 2022-12-06 |
| 10352893 | Gas sensor control apparatus | Keisuke NAKAGAWA, Shigehiro OHTSUKA, Hisashi KOZUKA, Ippei Kato | 2019-07-16 |
| 10012612 | Gas sensor element and gas sensor | Shigehiro OHTSUKA, Tomohiro Nishi, Keisuke NAKAGAWA, Ippei Kato | 2018-07-03 |
| 8439569 | Combined bearing and rotary machine | Kazuyuki Tatsuta, Tetsuro Sugiura | 2013-05-14 |
| D660890 | Unit bearing | Kazuyuki Tatsuta, Tetsuro Sugiura | 2012-05-29 |