Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7189311 | Purification of difluoromethane | — | 2007-03-13 |
| 6844474 | Process for the production of difluoromethane | Addison M. Smith, Hsueh Sung Tung, John Bass | 2005-01-18 |
| 6365580 | Process for the production of difluoromethane | Addison M. Smith, Hsueh Sung Tung, John Bass | 2002-04-02 |
| 5763708 | Process for the production of difluoromethane | Addison M. Smith, Hsueh Sung Tung, John Bass | 1998-06-09 |
| 5654494 | Process for the manufacture of 1,1,1,2-tetrafluoroethane | Hsueh Sung Tung, Gustavo Cerri, Yuon Chiu, Stanley Michael Jaskot, Nemesio Rogelio Viso +3 more | 1997-08-05 |
| 5346595 | Process for the purification of a pentafluoroethane azeotrope | Hsueh Sung Tung, Addison M. Smith | 1994-09-13 |