Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4442239 | Phosphate derivatives, process for producing phosphate derivatives and fillers for human hard tissues containing the same | Masayoshi Tsunekawa, Shinzo Yoshida | 1984-04-10 |
| 4404150 | Cyclic pyrophosphate derivatives and their preparation | Masayoshi Tsunekawa, Nobuyoshi Miyoshi | 1983-09-13 |
| 4397944 | Compositions for diagnosis of dental caries activity | Masayoshi Tsunekawa, Sadayuki Yuhda | 1983-08-09 |
| 4339558 | Hardening resin compositions | Takuji Miyamoto, Hiroshi Nakanaga | 1982-07-13 |