Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5962727 | Method for manufacturing diacetate esters of polytetramethylene ethers | Donald Truszkowski | 1999-10-05 |
| 5852218 | Alkanolysis of polyether polyol esters by reactive distillation | — | 1998-12-22 |
| 5684179 | Method for recovering diacetate esters of polytetramethylene ethers | — | 1997-11-04 |
| RE35360 | Reduction of molecular weight of poly(tetramethylene ether) glycol | — | 1996-10-22 |
| 5302255 | Reducing molecular weight distribution of polyether glycols by short-path distillation | Frank L. Rawling, Jr., James Schultz | 1994-04-12 |
| 5282929 | Reducing molecular weight distribution of polyether glycols by short-path distillation | Frank L. Rawling, Jr., James Schultz | 1994-02-01 |
| 5180857 | Reduction of molecular weight of poly(tetramethylene ether) glycol | — | 1993-01-19 |
| 5155283 | Polymerization of tetrahydrofuran using trifluoromethane sulfonic acid monohydrate as catalyst | Gary A. Hida | 1992-10-13 |
| 5149862 | Preparation of polytetramethylene ether glycol using an acidic zirconia catalyst | Melvin C. Baker, James Schultz | 1992-09-22 |
| 5130470 | Polymerization of tetrahydrofuran using a fluorinated acidic catalyst and maleic acid/maleic anhydride mixture as molecular weight control agent | Willard L. Quon, Kirk M. Schall, Gary A. Hida | 1992-07-14 |
| 5118869 | Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups | Gerfried Pruckmayr, Marianne Marsi, Willard L. Quon | 1992-06-02 |