Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6069228 | Process for preparing polyamides | Albert W. Alsop, Jeffrey D. Cohen, John M. Iwasyk, Clara Young Lin, David Neil Marks +1 more | 2000-05-30 |
| 5990265 | Production of poly(trimethylene terephthalate) | Craig Robert Gochanour, Kenneth Wayne Leffew, Jan M. Stouffer | 1999-11-23 |
| 5830982 | Production of poly (ethylene terephthalate) | Jan M. Stouffer, Kenneth Wayne Leffew | 1998-11-03 |
| 5763104 | Production of poly(trimethylene terephthalate) | Jan M. Stouffer, Kenneth Wayne Leffew | 1998-06-09 |
| 5744074 | Process for forming crystalline polymer pellets | Jan M. Stouffer, Kenneth Wayne Leffew | 1998-04-28 |
| 5730913 | Process for forming crystalline polymer pellets | Jan M. Stouffer, Kenneth Wayne Leffew | 1998-03-24 |
| 5714262 | Production of poly(ethylene terephthalate) | Jan M. Stouffer, Kenneth Wayne Leffew | 1998-02-03 |
| 5670606 | Crystalline form of poly(ethylene 2,6-naphthalate) and a method for its production | Jan M. Stouffer, Kenneth Wayne Leffew | 1997-09-23 |
| 5633018 | Apparatus for forming crystalline polymer pellets | Jan M. Stouffer, Kenneth Wayne Leffew | 1997-05-27 |
| 5540868 | Process for pellet formation from amorphous polyester | Jan M. Stouffer, Kenneth Wayne Leffew | 1996-07-30 |
| 5532333 | Production of poly(ethylene terephthalate) | Jan M. Stouffer, Kenneth Wayne Leffew | 1996-07-02 |
| 5510454 | Production of poly(ethylene terephthalate) | Jan M. Stouffer, Kenneth Wayne Leffew | 1996-04-23 |