Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013821 | Ortho and thio-ortho ester polymer | Jorge Heller, Steve Y. Ng | 1991-05-07 |
| 4957998 | Polymers containing acetal, carboxy-acetal, ortho ester and carboxyortho ester linkages | Jorge Heller, Steve Y. Ng | 1990-09-18 |
| 4946931 | Polymers containing carboxy-ortho ester and ortho ester linkages | Jorge Heller, Steve Y. Ng | 1990-08-07 |
| 4898928 | Polyacetal and polyketal hydrogels formed from acetals or ketals and polyols | Jorge Heller, Steve Y. Ng | 1990-02-06 |
| 4855132 | Method of preparing bioerodible polymers having pH sensitivity in the acid range and resulting product | Jorge Heller, Steve Y. Ng | 1989-08-08 |
| 4801457 | Polyacetal hydrogels formed from divinyl ethers and polyols | Jorge Heller | 1989-01-31 |
| 4764364 | Method of preparing bioerodible polymers having pH sensitivity in the acid range and resulting product | Jorge Heller, Steve Y. Ng | 1988-08-16 |
| 4713441 | Polyacetal hydrogels formed from divinyl ethers and polyols | Jorge Heller | 1987-12-15 |
| 4513143 | Preparation of ketene acetals | Steven Y. Ng, Jorge Heller | 1985-04-23 |
| 4304767 | Polymers of di- (and higher functionality) ketene acetals and polyols | Jorge Heller, Robert F. Helwing | 1981-12-08 |