Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5582803 | Electrically heated catalytic apparatus | Takaaki Itou, Hiroshi Hirayama, Tetsuo Nagami, Masakatsu Sanada, Kiyohiko Watanabe +11 more | 1996-12-10 |
| 5582805 | Electrically heated catalytic apparatus | Takaaki Itou, Hiroshi Hirayama, Tetsuo Nagami, Masakatsu Sanada, Kiyohiko Watanabe +11 more | 1996-12-10 |
| 5573731 | Electrically heated catalytic converter for an engine | Masahiko Ogai, Takuzou Kako, Yuuji Nakajima, Kenji Fujino, Kazunori Itoh +2 more | 1996-11-12 |
| 5554342 | Electrical heating type catalytic device | Hiroshi Hirayama, Kouhei Igarashi, Keiji Ito, Tohru Yoshinaga, Kiyohiko Watanabe +2 more | 1996-09-10 |
| 5537321 | Diagnostic apparatus for controlling the operation of a catalytic converter | Hiroshi Tanaka | 1996-07-16 |
| 5456063 | Secondary air supply apparatus for engine | Hiroshi Tanaka | 1995-10-10 |
| 5444978 | Catalyst warming up device of an internal combustion engine | Hiroshi Tanaka | 1995-08-29 |
| 5428955 | Device for controlling heating of catalyst for purifying exhaust gas | Kiyoshi Yuuki, Hiroshi Tanaka | 1995-07-04 |
| 5422082 | Electrically heatable catalytic converter | Takuzou Kako | 1995-06-06 |
| 5323607 | Exhaust emission control system and method having improved heating control function for catalyst | Hiroshi Tanaka | 1994-06-28 |
| 5235956 | Secondary air feed device of an engine | — | 1993-08-17 |
| 5224335 | Exhaust emission control apparatus for internal combustion engine | — | 1993-07-06 |
| H1113 | Apparatus for supplying power to electrically heated catalyst converter | — | 1992-12-01 |
| 4617880 | Valve actuating apparatus for optionally resting the operation of a valve in internal combustion engine | — | 1986-10-21 |
| 4612887 | Valve actuating apparatus for resting the operation of a valve in internal combustion engine | — | 1986-09-23 |
| 4611558 | Valve actuating apparatus in internal combustion engine | Toshio Tanahashi | 1986-09-16 |
| 4607600 | Valve actuating apparatus in internal combustion engine | — | 1986-08-26 |