Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885390 | Alkoxylated ethylene glycol diamine bottoms products for rigid urethane foams | George P. Speranza, Jiang-Jen Lin | 1989-12-05 |
| 4820810 | Urea catalyst for preparation of sucrose polyols useful for rigid polyurethane foams | Howard P. Klein | 1989-04-11 |
| 4681965 | Phosphorus containing aromatic amino polyols | George P. Speranza, Robert A. Grigsby, Jr. | 1987-07-21 |
| 4654376 | Polyurethane foams based on amino polyols | Kenneth G. McDaniel, Howard P. Klein | 1987-03-31 |
| 4602085 | Catalytic process for the production of hydroxyamine derivatives of alpha methyl glucoside | Roger G. Duranleau | 1986-07-22 |
| 4602091 | Production of ethylenediamine and N-aminoethylpiperazine from piperazine | — | 1986-07-22 |
| 4547591 | Preparation of linear polyethylenepolyamines with silica-alumina catalysts | James H. Templeton, Ernest L. Yeakey | 1985-10-15 |
| 4536522 | Manufacture of polyols and rigid polyurethane foam using thiodialkylene glycols | Robert A. Grigsby, Jr., George P. Speranza, Ernest L. Yeakey | 1985-08-20 |
| 4506090 | Aromatic polyols made from polyethylene terephthalate scrap, glycols and aromatic carbonyl-containing compounds | George P. Speranza | 1985-03-19 |
| 4500655 | Alkoxylated modified Mannich condensates and manufacture of rigid polyurethane foams therewith | — | 1985-02-19 |
| 4489178 | Mannich condensates having fire retardancy properties and manufacture of rigid polyurethane foam therewith | George P. Speranza | 1984-12-18 |
| 4487852 | Modified Mannich condensates and manufacture of rigid polyurethane foam with alkoxylation products thereof | George P. Speranza | 1984-12-11 |
| 4485196 | Liquid phase polyols which are alkylene oxide adducts of terephthalic esters from recycled polyethylene terephthalate | George P. Speranza, Robert A. Grigsby, Jr. | 1984-11-27 |
| 4485195 | Alkoxylated Mannich condensates having fire retardancy properties and manufacture of rigid polyurethane foam therewith | George P. Speranza | 1984-11-27 |
| 4469824 | Liquid terephthalic ester polyols and polyisocyanurate foams therefrom | Robert A. Grigsby, Jr., George P. Speranza | 1984-09-04 |
| 4469823 | Flexible polyurethane foams made using an aromatic polyester polyol | Ernest L. Yeakey, Robert L. Zimmerman | 1984-09-04 |
| 4465793 | Aromatic polyester polycarbonate polyols derived from polyethylene terephthalate residues | George P. Speranza | 1984-08-14 |
| 4448997 | Preparation of linear polyethylenepolyamines with an aluminum phosphate catalyst | — | 1984-05-15 |
| 4444918 | Aromatic polyols made from waste streams from the manufacture of terephthalic acids, alkylene glycols and dibasic acids | — | 1984-04-24 |
| 4444919 | Use of polyethylene terephthalate liquid waste streams containing glycols as rigid polyol extenders | — | 1984-04-24 |
| 4444920 | Aromatic polyols made from alkylene glycols and waste streams from the manufacture of dimethyl terephthalate containing methyl p-formylbenzoate | — | 1984-04-24 |
| 4439550 | Aromatic polyols made from recycled polyethylene terephthalate waste streams, alkylene glycol and dibasic acid waste streams | — | 1984-03-27 |
| 4439549 | Novel aromatic polyester polyol mixtures made from polyethylene terephthalate residues and alkylene oxides | — | 1984-03-27 |
| 4439546 | Scrap rim polyurethane modified extender polyols | Doris M. Rice | 1984-03-27 |
| 4439551 | Packaging foam polyurethane composition employing novel polyol blend | Ernest L. Yeakey, Michael Cuscurida | 1984-03-27 |