Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8345876 | Encryption/decryption system and method | Robert S. Sinn, Charles G. Sinn | 2013-01-01 |
| 4523954 | Process for manufacturing cellular plaster and molded plaster articles | Philippe Pichat, Michel Niel | 1985-06-18 |
| 4344925 | Ozone whitening of synthetic gypsum | Philippe Pichat, Michel Neil | 1982-08-17 |