Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941353 | Gas rate gyro | Yoshiaki Fukatsu, Kazuma Matsui | 1990-07-17 |
| 4925236 | Automotive air spoiler device | Norihisa Itoh, Kiyoshi Kawaguchi | 1990-05-15 |
| 4685437 | Intake air heater for internal combustion engine with perforated plate heater element partially traversing air passage | Toshiaki Tanaka, Hitoshi Niwa, Hirokatsu Mukai, Naoto Miwa, Akio Nara +3 more | 1987-08-11 |
| 4671058 | Heating device | Hitoshi Yoshida, Hirohumi Suzuki, Kazuo Oyobe, Kazuma Matsui, Naoto Miwa | 1987-06-09 |
| 4667644 | Intake air heating apparatus | Makoto Hori, Hitoshi Niwa, Hirokatsu Mukai, Toshiaki Tanaka | 1987-05-26 |
| 4519820 | Fitter apparatus for purifying exhaust gases | Kazuo Oyobe, Kazuma Matsui, Masanori Fukutani, Kazuyuki Ito, Naoto Miwa +1 more | 1985-05-28 |
| 4364369 | Method and apparatus for recirculating exhaust gases in diesel engine | Hideaki Sasaya, Toshikuni Miyazaki | 1982-12-21 |
| 4295456 | Exhaust-gas-recirculation system for use in diesel engines | Kazuma Matsui, Toshikuni Miyazaki, Hiroshi Sami, Tatehito Ueda | 1981-10-20 |