Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5925192 | Dry-cleaning of garments using gas-jet agitation | Edna M. Purer, Carl W. Townsend, Sidney C. Chao | 1999-07-20 |
| 5651276 | Dry-cleaning of garments using gas-jet agitation | Edna M. Purer, Carl W. Townsend, Sidney C. Chao | 1997-07-29 |
| 5467492 | Dry-cleaning of garments using liquid carbon dioxide under agitation as cleaning medium | Sidney C. Chao, Thomas B. Stanford, Edna M. Purer | 1995-11-21 |