Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8283437 | Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefrom | Peter D. Phelps | 2012-10-09 |
| 7767781 | Preparation of low-acid polyalkylene terephthalate and preparation of macrocyclic polyester oligomer therefrom | Peter D. Phelps | 2010-08-03 |
| 7750109 | Use of a residual oligomer recyclate in the production of macrocyclic polyester oligomer | Peter D. Phelps, Jimmy Lynn Webb, David Patrick Phelon, Paul M. Andrusyszyn | 2010-07-06 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters | — | 2007-12-18 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters | — | 2006-04-04 |
| 6855798 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters | — | 2005-02-15 |
| 6525164 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters | — | 2003-02-25 |
| 6235934 | Aqueous hexasubstituted guanidinium chlorides and methods for their preparation and use | Joseph John Caringi, Peter D. Phelps, Thomas Link Guggenheim, Larry I. Flowers, Daniel J. Brunelle +1 more | 2001-05-22 |
| 5872294 | Aqueous hexasubstituted guanidinium chlorides and methods for their preparation and use | Joseph John Caringi, Peter D. Phelps, Thomas Link Guggenheim, Larry I. Flowers, Daniel J. Brunelle +1 more | 1999-02-16 |
| 5414057 | Redistribution of organic polycarbonate compositions | Allen J. Campbell, David Michel Dardaris, Patrick Joseph McCloskey, Thomas L. Evans | 1995-05-09 |
| RE34431 | Macrocyclic oligomers containing spiro(bis)indane moieties | Daniel J. Brunelle, Thomas Link Guggenheim, James Anthony Cella, Thomas L. Evans, Luca P. Fontana +8 more | 1993-11-02 |
| 5256728 | Polycarbonate-titanium dioxide compositions and method | David Michel Dardaris, Patrick Joseph McCloskey | 1993-10-26 |
| 5142086 | Method for making organic carbonates | Joseph A. King, Jr., Terry E. Krafft | 1992-08-25 |
| 4980453 | Macrocyclic oligomers containing spiro(bis)indane moietes | Daniel J. Brunelle, Thomas Link Guggenheim, James Anthony Cella, Thomas L. Evans, Luca P. Fontana +8 more | 1990-12-25 |
| 4950731 | Method for preparing spirobiindane polycarbonates | Jerry C. Lynch | 1990-08-21 |
| 4912189 | Spirobiindanol polysiloxanes | David Michel Dardaris | 1990-03-27 |
| 4895919 | Spirobiindane copolysiloxanecarbonates and method for their preparation | David Michel Dardaris, Donald G. LeGrand | 1990-01-23 |
| 4864034 | Spiro(bis)indane bis-oxyphthalic acids and functional derivatives thereof | James Anthony Cella | 1989-09-05 |
| 4847432 | Method for the purification of ion exchange resins used in the production of bisphenol A | — | 1989-07-11 |
| 4791234 | Substantially pure spirobiindane bisphenols and method for their preparation | Jerry C. Lynch | 1988-12-13 |
| 4766254 | Method for maximizing yield and purity of bisphenol A | Michael J. Cipullo | 1988-08-23 |
| 4701566 | Method for preparing spirobiindane bisphenols | Jerry C. Lynch | 1987-10-20 |
| 4455409 | Method for making bisphenol catalysts | John R. Campbell | 1984-06-19 |
| 4424283 | Catalyst for synthesizing bisphenol and method for making same | Geroge R. Loucks | 1984-01-03 |
| 4396728 | Method and catalyst for making bisphenol | — | 1983-08-02 |