Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290353 | Vaterite and production method | Henri-Rene Langelin | 1994-03-01 |
| 5277837 | Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide | Philippe Dumont | 1994-01-11 |