Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6844662 | Spark plug and ignition apparatus | Hitoshi Morita, Takehiko Kato, Hiroshi Yorita, Keiji Kanao, Tetsuya Miwa | 2005-01-18 |
| 6767435 | Bright surface structure and a manufacturing method thereof | Naoaki Kitagawa | 2004-07-27 |
| 6653767 | Spark plug and ignition apparatus | Hitoshi Morita, Takehiko Kato, Hiroshi Yorita, Keiji Kanao, Tetsuya Miwa | 2003-11-25 |
| 6397827 | Spark ignition device for direct injection-type engines | Takehiko Kato, Tohru Yoshinaga, Hiroshi Yorita, Tatsushi Nakashima, Tetsuya Miwa | 2002-06-04 |
| 6117280 | Duplex coated steel composite products and method of manufacturing them | Yoshikazu Yaginuma, Yoshiro Ishii | 2000-09-12 |
| 6110571 | Duplex coated steel composite products and method of manufacturing them | Yoshikazu Yaginuma, Yoshiro Ishii | 2000-08-29 |
| 6105552 | Abnormal combustion detection apparatus and method for internal combustion engine | Katsuhiko Arisawa, Tokio Kohama, Kiyohito Watanabe | 2000-08-22 |
| 5791043 | Process of producing metal catalyst carrier | Tokio Kohama, Tohru Yoshinaga, Kiyohiko Watanabe, Yasuyuki Kawabe | 1998-08-11 |
| 5658536 | Exhaust gas purifying apparatus | Tokio Kohama, Tohru Yoshinaga, Kiyohiko Watanabe, Yasuyuki Kawabe | 1997-08-19 |
| 5567395 | Catalyst carrier for a catalytic converter for purifying an exhaust gas in an internal combustion engine | Tohru Yoshinaga, Kiyohiko Watanabe, Yasuyuki Kawabe | 1996-10-22 |
| 4807276 | Re-transmission method and apparatus in communication system using public communication lines | — | 1989-02-21 |
| 4383659 | Locking device for safety seat belts | — | 1983-05-17 |