Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334931 | Method for producing asbestos free machinable calcium silicate high heat-resistant material | Hiroshi Asaumi, Kazuo Kubota, Hisanori Yokoo | 1982-06-15 |
| 4325772 | Method of internally lining an installed pipe | Tetsui Suetoshi, Munetaka Kinugasa, Koichi Hosoya | 1982-04-20 |