Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7705273 | Ceramic heater, method of producing the same, and glow plug using a ceramic heater | Nobuyuki Hotta, Yoshihiro Yamamoto, Masaya Ito | 2010-04-27 |
| 7282670 | Ceramic heater and glow plug having the same | Hiroki Watanabe, Masaya Ito | 2007-10-16 |
| 6849207 | Silicon nitride sintered material and production process thereof | Kouji Funaki, Hiroki Watanabe, Masaya Ito | 2005-02-01 |
| 6657166 | Silicon nitride sintered material and production process thereof | Kouji Funaki, Hiroki Watanabe, Masaya Ito | 2003-12-02 |
| 6621052 | Silicon nitride-tungsten carbide composite sintered material, process for preparing the same and glow plug | Hiroki Watanabe, Masaya Ito | 2003-09-16 |
| 6563089 | Silicon nitride—tungsten carbide composite sintered material, production process therefor, and glow plug comprising the same | Hiroki Watanabe, Masaya Ito | 2003-05-13 |
| 6559579 | Alumina-based sintered body insulator for spark plugs | Hirohito Ito, Kenji Nunome, Makoto Sugimoto, Kuniharu Tanaka, Yoshihiro Yamamoto +1 more | 2003-05-06 |
| 6069105 | Alumina-based sintered materials and process for producing the same | Yoshihiro Yamamoto, Toru Shimamori, Iazuhisa Itakura, Ken Mizuno | 2000-05-30 |