Issued Patents All Time
Showing 76–100 of 148 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668186 | Process for depolymerizing polyesters | Ganesh Kailasam, Judith Ann Serth-Guzzo, Paul R. Wilson | 1997-09-16 |
| 5661214 | Titanate esters useful as polymerization initiators for macrocylic polyester oligomers | Judith Ann Serth-Guzzo | 1997-08-26 |
| 5648454 | Process for producing high ductile polyesters | — | 1997-07-15 |
| 5514813 | Preparation of macrocyclic polyetherimide oligomers from substituted bisphthalimides | — | 1996-05-07 |
| 5498651 | Method for polymerizing macrocyclic polyester oligomers | — | 1996-03-12 |
| 5466744 | Polymerization of macrocyclic poly(alkylene dicarboxylate) oligomers | Thomas L. Evans, Jean E. Bradt, Eric J. Pearce, Paul R. Wilson | 1995-11-14 |
| 5446122 | Process for preparing macrocyclic polyesters | Gregory L. Warner, Paul R. Wilson | 1995-08-29 |
| 5407984 | Process for preparing macrocyclic polyester oligomers | Tohru Takekoshi | 1995-04-18 |
| 5321117 | Macrocyclic polyester oligomer preparation with Lewis acid as catalyst | — | 1994-06-14 |
| 5264548 | Low melting cyclic polycarbonate composition | Thomas Gerard Shannon | 1993-11-23 |
| RE34431 | Macrocyclic oligomers containing spiro(bis)indane moieties | Thomas Link Guggenheim, James Anthony Cella, Thomas L. Evans, Luca P. Fontana, Gary R. Faler +8 more | 1993-11-02 |
| 5231161 | Method for preparation of macrocyclic poly(alkylene dicarboxylate) oligomers from bis(hydroxyalkyl) dicarboxylates | John Brian McDermott | 1993-07-27 |
| 5229482 | Phase transfer catalyzed preparation of aromatic polyether polymers | — | 1993-07-20 |
| 5214158 | Method for preparation of macrocyclic poly(alkylene dicarboxylate) oligomers | Jean E. Bradt | 1993-05-25 |
| 5212284 | Conversion of cyclic polycarbonate oligomers to linear polycarbonates initiated by phosphine-disulfide product or precursor thereof | Herman O. Krabbenhoft | 1993-05-18 |
| 5162458 | Solvent resistant linear polycarbonate compositions | Herman O. Krabbenhoft, Eric J. Pearce, David K. Bonauto | 1992-11-10 |
| 5153276 | Solvent resistant polycarbonate blends | Herman O. Krabbenhoft, Eric J. Pearce, David K. Bonauto | 1992-10-06 |
| 5142024 | Stabilization of cyclic polycarbonates with organic carboxylic or sulfonic acids | David K. Bonauto | 1992-08-25 |
| 5132423 | Method for conducting organic reactions using guanidinium salt as phase transfer catalyst | Deborah Ann Haitko, James Barren, Sunita Singh | 1992-07-21 |
| 5116975 | Bis(guanidinium)alkane salts as phase transfer catalysts | — | 1992-05-26 |
| 5100804 | Method for determining chloroformate concentration | David K. Bonauto, Eugene Pauling Boden | 1992-03-31 |
| 5082968 | Method of preparing hexaalkylguanidinium salts | — | 1992-01-21 |
| 5081298 | Bis(pentaalkylguanidinium) alkane salts as phase transfer catalysts | — | 1992-01-14 |
| 5039783 | Method for preparing and polymerizing macrocyclic poly(alkylene discarboxylate) oligomers | Jean E. Bradt | 1991-08-13 |
| 4994595 | Preparation of spirobiindane bisphenol bischloroformate compositions | Thomas Gerard Shannon | 1991-02-19 |