Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336505 | Bioerodible polymers useful for the controlled release of therapeutic agents | Steve Y. Ng | 1994-08-09 |
| 5128376 | Method for percutaneously administering physiologically active agents using an adjuvant a solvent and a diol moderator | Kenichiro Saito, Wilfred A. Skinner | 1992-07-07 |
| 5108755 | Biodegradable composites for internal medical use | Alma U. Daniels | 1992-04-28 |
| 5030457 | Bioerodible polymers useful for the controlled release of therapeutic agents | Steve Y. Ng | 1991-07-09 |
| 5028435 | System and method for transdermal drug delivery | Martin Katz, Sergio Nacht | 1991-07-02 |
| 5013821 | Ortho and thio-ortho ester polymer | Steve Y. Ng, Donald W. H. Penhale | 1991-05-07 |
| 4957998 | Polymers containing acetal, carboxy-acetal, ortho ester and carboxyortho ester linkages | Steve Y. Ng, Donald W. H. Penhale | 1990-09-18 |
| 4946931 | Polymers containing carboxy-ortho ester and ortho ester linkages | Steve Y. Ng, Donald W. H. Penhale | 1990-08-07 |
| 4898928 | Polyacetal and polyketal hydrogels formed from acetals or ketals and polyols | Donald W. H. Penhale, Steve Y. Ng | 1990-02-06 |
| 4855132 | Method of preparing bioerodible polymers having pH sensitivity in the acid range and resulting product | Donald W. H. Penhale, Steve Y. Ng | 1989-08-08 |
| 4801457 | Polyacetal hydrogels formed from divinyl ethers and polyols | Donald W. H. Penhale | 1989-01-31 |
| 4765973 | Polymers containing pendant acid functionalities and labile backbone bonds | — | 1988-08-23 |
| 4764364 | Method of preparing bioerodible polymers having pH sensitivity in the acid range and resulting product | Donald W. H. Penhale, Steve Y. Ng | 1988-08-16 |
| 4752612 | Method and percutaneously administering physiologically active agents using an alcohol adjuvant and a solvent | Kenichiro Saito, Wilfred A. Skinner | 1988-06-21 |
| 4713441 | Polyacetal hydrogels formed from divinyl ethers and polyols | Donald W. H. Penhale | 1987-12-15 |
| 4710497 | Method for percutaneously administering physiologically active agents | Wilfred A. Skinner, Kenichiro Saito, Susumu Satoh | 1987-12-01 |
| 4639366 | Polymers containing pendant acid functionalities and labile backbone bonds | — | 1987-01-27 |
| 4605670 | Method for percutaneously administering metoclopramide | Kenichiro Saito, Wilfred A. Skinner | 1986-08-12 |
| 4590190 | Method for percutaneously administering physiologically active agents using an alcohol adjuvant and a solvent | Kenichiro Saito, Wilfred A. Skinner | 1986-05-20 |
| 4513143 | Preparation of ketene acetals | Steven Y. Ng, Donald W. H. Penhale | 1985-04-23 |
| 4502976 | Water soluble polyesters | — | 1985-03-05 |
| 4304767 | Polymers of di- (and higher functionality) ketene acetals and polyols | Robert F. Helwing, Donald W. H. Penhale | 1981-12-08 |
| 4261969 | Controlled drug release composition | — | 1981-04-14 |
| 4249531 | Bioerodible system for delivering drug manufactured from poly(carboxylic acid) | Richard W. Baker | 1981-02-10 |