Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6989432 | Copolymers of tetrahydrofuran, ethylene oxide and an additional cyclic ether | Charles F. Palmer, Jr., Gary A. Lodoen | 2006-01-24 |
| 5284980 | Block copolyethers via oxonium coupling of poly(tetramethylene ether) glycols | Robert Osborne | 1994-02-08 |
| 5118869 | Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups | Suriyanarayan Dorai, Marianne Marsi, Willard L. Quon | 1992-06-02 |
| 4584414 | Process for preparing improved poly(tetramethylene ether) glycol by alcoholysis | — | 1986-04-22 |
| 4510333 | Method for preparing poly(tetramethylene ether) glycol having narrow molecular weight distribution | — | 1985-04-09 |
| 4230892 | Alcoholysis process for preparing poly-(tetramethylene ether) glycol | — | 1980-10-28 |
| 4202964 | Method for reducing oligomeric cyclic ether content of a polymerizate | Ivan M. Robinson | 1980-05-13 |