Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8218291 | Monomers for preparing polycarbonate resins, methods of preparing the monomers, polycarbonate resins prepared with the monomers, and capacitors comprising the polycarbonate resins | Norberto Silvi, Gary Charles Davis, Patrick Joseph McCloskey, Julia Lam Lee, Yang Cao +1 more | 2012-07-10 |
| 7371902 | Methods for purifying p,p-bisphenol-A | Ramachandran Kumar, Gomatam Raghavan Ravi, Hyacinth Mary Bastian, Gururaj Sathyanarayana, Kumar Krishna Ramamurthy +2 more | 2008-05-13 |
| 7230066 | Polycarbonate—ultem block copolymers | Farid Fouad Khouri, Julia Lam Lee | 2007-06-12 |
| 7211641 | Liquid crystal polycarbonates and methods of preparing same | Julia Lam Lee | 2007-05-01 |
| 6680270 | Regeneration of catalysts used in the manufacture of bisphenols | Rudy Francois Alain Jos Peemans, Alexey Kruglov, Chuks O. Mbeledogu, Darlene Hope Nance, Karl Aaron Baro +3 more | 2004-01-20 |
| 6486222 | Combination ion exchange resin bed for the synthesis of bisphenol A | Gaylord M. Kissinger, Harish Radhakrishna Acharya, Rudy Francois Alain Jos Peemans, Eduard Hendricus Schlarmann | 2002-11-26 |
| 6303835 | Method for recovering material values from bisphenol tars | Eric James Pressman, Julia Lam Lee | 2001-10-16 |
| 5981788 | Method for recovering and recycling catalyst constituents | John Yaw Ofori, Eric James Pressman, Ganesh Kailasam, Julia Lam Lee | 1999-11-09 |
| 5908952 | Method for preparing diaryl carbonates employing .beta.-diketone salts | Eric James Pressman | 1999-06-01 |
| 5898079 | Method for preparing diaryl carbonates employing hexaalkylguanidinium halides | Eric James Pressman | 1999-04-27 |
| 5898080 | Method for preparing diaryl carbonates employing hexaalkylguanidinium halides | Eric James Pressman | 1999-04-27 |
| 5760272 | Method for preparing diaryl carbonates with improved selectivity | Eric James Pressman | 1998-06-02 |
| 5756801 | Method of purifying diphenyl carbonate-phenol adduct | Eric James Pressman | 1998-05-26 |
| 5723689 | Process for recovering bisphenols | Eric James Pressman, Joseph Richard Wetzel, Martin Herke Oyevaar | 1998-03-03 |
| 5516855 | Amide-ester copolymers and process for the preparation thereof | Donald C. Clagett, Daniel W. Fox, Louis M. Maresca | 1996-05-14 |
| 5428075 | Method for regenerating a sulfonated aromatic organic polymeric ion-exchange resin bed having deactivated aminoorganomercaptan groups with phenol | Eric James Pressman | 1995-06-27 |
| 5414151 | Method for making bisphenol | Eric James Pressman | 1995-05-09 |
| 5340885 | Amide-ester copolymers and process for the preparation thereof | Donald C. Clagett, Daniel W. Fox, Louis M. Maresca | 1994-08-23 |
| 5336814 | Method for recovering bis hydroxy aromatic organic values and bis aryl carbonate values from scrap aromatic polycarbonate | — | 1994-08-09 |
| 5312955 | Method for making aromatic organic carbonates | Eric James Pressman | 1994-05-17 |
| 5280088 | Thermoplastic blends of a polyamide having low amine end-group concentration and a polymer containing carbonate linkages | Ronald J. Gambale, Donald C. Clagett, Louis M. Maresca | 1994-01-18 |
| 5239106 | Method of recovering and purifying diphenylcarbonate from phenolic solutions thereof | — | 1993-08-24 |
| 5089600 | Amide-urea copolymer and process for the preparation thereof | Kenneth P. Blackmon, Donald C. Clagett, Daniel W. Fox, Louis M. Maresca | 1992-02-18 |
| 5070177 | Ultraviolet radiation resistant polyphthalatecarbonate resin | Donald C. Clagett, Daniel W. Fox, Paul Dean Sybert | 1991-12-03 |
| 5019641 | Polyamide from 1,3 propylene diamine and isophthalic acid compound | Donald C. Clagett | 1991-05-28 |