Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884398 | Method of and apparatus for reducing engine smoke emissions | Keisuke Kishitani, Masayoshi Kajitani, Shoji Tozawa, Masanori Satoh, Kisaburo Otabe +1 more | 1989-12-05 |
| 4866932 | Apparatus for treating particulate emission from diesel engine | Masayoshi Kajitani, Masao Kodama, Masanobu Takano | 1989-09-19 |
| 4853859 | Operation data recording system | Shoji Tozawa, Tsuneo Hisatake, Tadasi Atono | 1989-08-01 |