Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5855854 | Oxidation catalyst for diesel engine | Motohiro Shinzawa | 1999-01-05 |
| 5804148 | Engine exhaust purifier | Hiroyuki Kanesaka | 1998-09-08 |
| 4741603 | Electrochromic nonglaring mirror | Harutoshi Miyagi, Masazumi Ishikawa | 1988-05-03 |
| 4565860 | Polymer of triphenylamine | Masazumi Ishikawa, Mikio Kawai | 1986-01-21 |