Pharmaceutical Delivery Systems
7Patents
0Active
7Granted
30Portfolio score
Filing activity: Aug 22, 1988 → Apr 11, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5461140A | Bioerodible polymers for solid controlled release pharmaceutical compositions | Chemistry; Metallurgy | 95 | Expired |
| US4946931A | Polymers containing carboxy-ortho ester and ortho ester linkages | Chemistry; Metallurgy | 77 | Expired |
| US5336505A | Bioerodible polymers useful for the controlled release of therapeutic agents | Human Necessities | 56 | Expired |
| US4957998A | Polymers containing acetal, carboxy-acetal, ortho ester and carboxyortho ester linkages | Chemistry; Metallurgy | 51 | Expired |
| US5030457A | Bioerodible polymers useful for the controlled release of therapeutic agents | Chemistry; Metallurgy | 28 | Expired |
| US5824343A | Bioerodible polymers, compositions and therapeutic method | Human Necessities | 21 | Expired |
| US5013821A | Ortho and thio-ortho ester polymer | Human Necessities | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.