Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11518704 | Fabrication method for porous glass base material for optical fiber | Hiroki Kojima | 2022-12-06 |
| 10377659 | Optical fiber base material manufacturing apparatus | Masami Terashima, Takaaki Nagao | 2019-08-13 |
| 9837798 | Spark plug | Yuichi Yamada | 2017-12-05 |
| 9758422 | Optical fiber base material manufacturing apparatus | Masami Terashima, Takaaki Nagao | 2017-09-12 |
| 9731993 | Method for producing porous glass base material | Makoto Yoshida, Yuhei URATA | 2017-08-15 |
| 9525270 | Spark plug | Yasushi Sakakura | 2016-12-20 |
| 9093823 | Spark plug and method of manufacturing spark plug | Yasushi Sakakura | 2015-07-28 |
| 8981633 | Spark plug and production method therefor | Yasushi Sakakura | 2015-03-17 |
| 8878426 | Ignition plug | Yasushi Sakakura | 2014-11-04 |