Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380041 | Protective boot for heel ends of skis | — | 1995-01-10 |
| 5304688 | Process for the preparation of bishydroxy aromatic compounds | Muthiah N. Inbasekaran | 1994-04-19 |
| 5288909 | Catalytic reforming of alkyleneamines | George E. Hartwell, David C. Molzahn | 1994-02-22 |
| 5256786 | Catalytic reforming of cyclic alkyleneamines | David C. Molzahn, George E. Hartwell | 1993-10-26 |
| 5239105 | Catalytic formation of diarylcarbonates | R. Garth Pews | 1993-08-24 |
| 5210307 | Catalytic reforming of alkyleneamines to linearly-extended polyalkylenepolyamines | David C. Molzahn, George E. Hartwell | 1993-05-11 |
| 5166442 | Catalytic reforming of alkyleneamines | George E. Hartwell, David C. Molzahn | 1992-11-24 |
| 5118850 | Catalytic reforming of alkyleneamines to linearly-extended polyalkylenepolyamines | David C. Molzahn, George E. Hartwell | 1992-06-02 |
| 5118851 | Process of preparing mixtures of polyalkylenepolyamines and alkanolpolyamines | David C. Molzahn, George E. Hartwell | 1992-06-02 |
| 5073635 | Process of preparing linearly-extended polyalkylenepolyamines employing metal silicate catalysts | David C. Molzahn, George E. Hartwell | 1991-12-17 |
| 5030740 | Process for preparing linearly-extended polyalkylenepolyamines | David C. Molzahn, George E. Hartwell | 1991-07-09 |
| 5011999 | Process of preparing non-cyclic polyalkylenepolyamines employing group VB metal catalysts | George E. Hartwell, David C. Molzahn, Enrique G. Ramirez, John E. Lastovica, Jr. | 1991-04-30 |
| 4996363 | Catalytic reforming of alkyleneamines to linearly-extended polyalkylenepolyamines | David C. Molzahn, George E. Hartwell | 1991-02-26 |
| 4983735 | Preparation of alcohol-extended and amine-extended piperazines | George E. Hartwell, David C. Molzahn | 1991-01-08 |
| 4973569 | Preparation of group VB metal phosphate catalysts therefor | George E. Hartwell | 1990-11-27 |
| 4927931 | Preparation of alkyl-extended, alcohol-extended or amine-extended piperazines | David C. Molzahn, George E. Hartwell | 1990-05-22 |
| 4922024 | Amination process employing group vib metal catalysts | Marvin H. Tegen, George E. Hartwell | 1990-05-01 |
| 4891349 | Catalyst for preparing amines | — | 1990-01-02 |
| 4886308 | Hasp fastener unit | — | 1989-12-12 |
| 4845253 | Silver-based catalyst for vapor phase oxidation of olefins to epoxides | — | 1989-07-04 |
| 4806690 | Method of producing amines | — | 1989-02-21 |
| 4771557 | Transparent pocket for mounting display items and method for manufacturing same | — | 1988-09-20 |
| 4772578 | Method of preparing supported catalysts | — | 1988-09-20 |
| 4689316 | Method of preparing supported catalysts | — | 1987-08-25 |