Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413102 | Composition for protecting cementware from frost-damage comprising urethane resin and organopolysiloxane | Michio Tanaka, Kohji Nasu | 1983-11-01 |
| 4330595 | Method for protecting cementware from frost-damage | Michio Tanaka, Kohji Nasu | 1982-05-18 |