Issued Patents All Time
Showing 26–50 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6288188 | Polyphenylene oligomers and polymers | James P. Godschalx, Duane R. Romer, Michael E. Mills | 2001-09-11 |
| 6222044 | Process for making 2-aryl benz (ox, thi, imid) azoles and 2-aminoaryl aminobenz (ox, thi, imid) azoles | — | 2001-04-24 |
| 5965679 | Polyphenylene oligomers and polymers | James P. Godschalx, Duane R. Romer, Ying H. So, Michael E. Mills, Gary R. Buske +4 more | 1999-10-12 |
| 5736748 | Polyols having reduced terminal unsaturation and a process for producing same | Ritchie A. Wessling | 1998-04-07 |
| 5710290 | Functionalized cycloaliphatic nitrile oxides | Clark H. Cummins, Ramki Subramanian, Richard F. Fibiger | 1998-01-20 |
| 5567843 | Process for making 2-aryl benz (ox, thi, imid)azoles and 2-aminoaryl aminobenz(ox, thi, imid)azoles | — | 1996-10-22 |
| 5463129 | Cleaving arylethers | Richard G. Pews | 1995-10-31 |
| 5414130 | Process for the preparation of diaminoresorcinol | Richard G. Pews, Paul C. Vosejpka | 1995-05-09 |
| 5399768 | Process for the preparation of diaminoresorcinol | Richard G. Pews | 1995-03-21 |
| 5371303 | One-step preparation of 4,6-dinitroresorcinol from resorcinol | William J. Kruper, Jr., John W. Hull, Jr., George J. Frycek | 1994-12-06 |
| RE34745 | High purity process for the preparation of 4,6-diamino-1,3-benzenediol | — | 1994-09-27 |
| 5225515 | Poly(aryl ether) polymers containing perfluorocyclobutane rings | William J. Harris | 1993-07-06 |
| 5210171 | Process to polymerize AB-PBO monomer phosphate salts | William J. Harris, Carl W. Hurtig | 1993-05-11 |
| 5151490 | Polybenzoxazoles having pendant methyl groups | William J. Harris | 1992-09-29 |
| 5142021 | Use of reducing agents in polybenzazole synthesis | Steven Rosenberg, William J. Harris | 1992-08-25 |
| 5138020 | Phosphate salts of monomers for PBZ and their use in preparing PBZ polymers | William J. Harris, Ming-Biann Liu, Luke R. Kleiss, Steven Rosenberg | 1992-08-11 |
| 5099057 | Process for the preparation of ar-amino-para-arenediols | Cynthia L. Rand | 1992-03-24 |
| 5091500 | Polybenzazole polymer containing perfluorocyclobutane rings | William J. Harris | 1992-02-25 |
| 5075392 | Thermoplastic compositions containing polybenzoxazole, polybenzothiazole and polybenzimidazole moieties | William J. Harris, Wen-Fang Hwang | 1991-12-24 |
| 5068384 | Phosphate salts of AB-polybenzoxazole monomer | William J. Harris, Carl W. Hurtig | 1991-11-26 |
| 5021580 | Polybenzoxazoles having pendant methyl groups | — | 1991-06-04 |
| 4982001 | Process for the preparation of amino-1,3-benzenediol | Cynthia L. Rand | 1991-01-01 |
| 4959492 | Process to synthesize AB-PBO monomer and phosphate salts thereof | William J. Harris, Carl W. Hurtig | 1990-09-25 |
| 4912246 | 1,3-bis(alkylcarbonato)-nitrobenzenes | Cynthia L. Rand | 1990-03-27 |
| 4835306 | Preparation of 3-amino-4-hydroxybenzoic acids | — | 1989-05-30 |