Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5086162 | Polyether amide from polyalkylene glycol diamine and diacid mixture | George P. Speranza | 1992-02-04 |
| 5086155 | 1-isopropyl-2-tolylimidazole as an epoxy resin curative | Harold G. Waddill, George P. Speranza | 1992-02-04 |
| 5082917 | Piperazine derivatives as chain extenders in polyurea elastomer systems and method making same | Dudley J. Primeaux, II, Donald H. Champion | 1992-01-21 |
| 5072020 | Aliphatic polyamines from polynitro compounds | George P. Speranza, Michael Cuscurida | 1991-12-10 |
| 5066804 | Preparation of alkyl morpholinones | — | 1991-11-19 |
| 5053484 | Polyether amide from mixture of polyether diamine | George P. Speranza, Donald H. Champion | 1991-10-01 |
| 5041664 | Continuous process for preparing quaternary ammonium salts | — | 1991-08-20 |
| 5030710 | Nylon-6 modified with low molecular weight polyethylene glycol diamines | George P. Speranza | 1991-07-09 |
| 5013812 | Polybiurets | George P. Speranza | 1991-05-07 |
| 5003084 | Process for preparing alkylene carbonates | George P. Speranza | 1991-03-26 |
| 5001267 | Secondary alkyl amine derivatives of ethylenediamine | George P. Speranza, Jiang-Jen Lin, James H. Templeton | 1991-03-19 |
| 4996294 | Preparation of aminotetramines | Michael Cuscurida, George P. Speranza | 1991-02-26 |
| 4983565 | Catalyst for the preparation of linear polyethylenepolyamines and method of preparing the catalyst | John F. Knifton | 1991-01-08 |
| 4946933 | Elastomeric polyamide hot melt adhesive from low molecular weight polyoxyethylene diamine | George P. Speranza | 1990-08-07 |
| 4931528 | 1-isopropyl-2-methyl imidazole as an epoxy resin curative | Harold G. Waddill, George P. Speranza | 1990-06-05 |
| 4927942 | Method for the preparation of imidazoles | George P. Speranza | 1990-05-22 |
| 4921969 | Method for the preparation of imidazoles | George P. Speranza | 1990-05-01 |
| 4910303 | Process for preparing oxazine derivatives | John F. Knifton | 1990-03-20 |
| 4897430 | One Component polyurea | George P. Speranza | 1990-01-30 |
| 4892959 | Method for the production of N-methylpyrrolidine | Donald H. Champion, John F. Knifton | 1990-01-09 |
| 4788289 | Process for preparing pyrazines from hydroxyamines | John F. Knifton | 1988-11-29 |
| 4774336 | Process for preparing N-substituted piperazines from ethylene glycol and amines | — | 1988-09-27 |
| 4670557 | Process for preparing hydroxymorpholines | — | 1987-06-02 |