Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4605770 | Noncyclic polyalkylene polyamines by the reaction of an alkanolamine compound and an alkyleneamine compound in the presence of a Group IIA or Group IIIB metal acid phosphate catalyst | Thomas A. Johnson | 1986-08-12 |
| 4597911 | Production of amino aliphatic and cycloaliphatic hydrogen sulfates | Thomas A. Johnson | 1986-07-01 |
| 4578517 | Polyalkylene polyamines from alkanolamine and ammonia or amines using group IIIB metal acid phosphate catalysts | Thomas A. Johnson | 1986-03-25 |
| 4560798 | Production of aminoethylethanolamine using rare earth metal or strontium hydrogen phosphates as catalysts | Thomas A. Johnson | 1985-12-24 |
| 4503253 | Production of noncyclic polyalkyene polyamines | Thomas A. Johnson | 1985-03-05 |
| 4463193 | Production of noncyclic polyalkylene polyamines | Thomas A. Johnson | 1984-07-31 |
| 4399308 | Lewis acid halide catalysts for preparation of polyamines | Thomas A. Johnson | 1983-08-16 |
| 4394524 | Preparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamine | Thomas A. Johnson | 1983-07-19 |
| 4362886 | Preparation of linear polyalkylene polyamines using metal catalyst | Thomas A. Johnson | 1982-12-07 |
| 4316841 | Reforming linear polyamines | Thomas A. Johnson | 1982-02-23 |
| 4316840 | Reforming linear polyamines | Thomas A. Johnson | 1982-02-23 |
| 4314083 | Preparation of linear polyalkylene polyamines | Thomas A. Johnson | 1982-02-02 |
| 4313005 | Inhibiting amidine formation during hydrogenation of organo nitriles | Randall J. Daughenbaugh | 1982-01-26 |
| 4303759 | Polyalkylenecarbonate compositions with improved thermal stability and method for making same | Dale D. Dixon | 1981-12-01 |