Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10270227 | Ignition plug | Yasushi Sakakura | 2019-04-23 |
| 9343877 | Spark plug and manufacturing method thereof | Kei Takahashi | 2016-05-17 |
| 9236715 | Spark plug and method of manufacturing spark plug | Yasushi Sakakura | 2016-01-12 |
| 9172215 | Spark plug having center electrode tip of varying widths | Yasushi Sakakura, Kei Takahashi | 2015-10-27 |
| 9160146 | Spark plug | Yasushi Sakakura | 2015-10-13 |
| 8796909 | Igniter plug with cooling fluid and method of manufacturing igniter plug | Yasushi Sakakura | 2014-08-05 |
| 5695899 | Colored toner for developing electrostatic images | Hiroshi Kamada, Hitoshi Masuda, Hiroyoshi Shimomura, Hiroshi Serizawa, Kensuke Okuda +1 more | 1997-12-09 |
| 5683849 | Colored toner for developing electrostatic images | Hiroshi Kamada, Hitoshi Masuda, Hiroyoshi Shimomura, Hiroshi Serizawa, Kensuke Okuda +1 more | 1997-11-04 |
| 5591556 | Toners for developing electrostatic image | Hiroyoshi Shimomura, Hiroshi Serizawa, Masatoshi Maruyama | 1997-01-07 |
| 4996127 | Toner for developing an electrostatically charged image | Hiroyoshi Shimomura, Koichi Murai, Masatoshi Maruyama, Toyokichi Tange | 1991-02-26 |
| 4797339 | Toner for developing electrostatic images | Masatoshi Maruyama, Toyokichi Tange | 1989-01-10 |