Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4207661 | Method of fabricating a catalyst converter for cleaning exhausts of cars | Yoshio Mase, Tadayoshi Hayashi, Shinichi Natsuume, Yasuhisa Kobayashi | 1980-06-17 |
| 4203949 | Catalyst converter for cleaning exhausts of cars | Yoshio Mase, Tadayoshi Hayashi, Shinichi Natsuume, Yasuhisa Kobayashi | 1980-05-20 |