Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818317 | Method for producing ceramic honeycomb structural body | Showji Asai | 1989-04-04 |
| 4563414 | Method of producing a mask to be used for the production of a ceramic filter | Yutaka Ogawa, Shoji Asai | 1986-01-07 |
| 4522668 | Method of producing ceramic filter | Yutaka Ogawa, Tsunezo Takeuchi | 1985-06-11 |