Issued Patents All Time
Showing 76–95 of 95 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305943 | 4-Amino-6-(pyridinyl)-3(2H)-pyridazinones and their use as cardiotonics | William B. Dickinson, Baldev Singh | 1981-12-15 |
| 4304777 | 6-(Pyridinyl)-3(2H)-pyridazinones and their use as cardiotonics | William B. Dickinson | 1981-12-08 |
| 4304776 | 4-Substituted-6-(pyridinyl)-3(2h)-pyridazinones and their use as intermediates and cardiotonics | William B. Dickinson | 1981-12-08 |
| 4304775 | 3-Hydrazino-6-(pyridinyl) pyridazines and cardiotonic use thereof | William B. Dickinson | 1981-12-08 |
| 4302462 | 4(or 3)-(3,4-Dihydroxyphenyl)pyridines, their cardiotonic use and cardiotonic use of their methyl ethers | Joseph C. Collins, Baldev Singh | 1981-11-24 |
| 4298609 | 4,5-Dihydro-6-(4-pyridinyl)-3-pyridazinol and salts, their preparation and use as blood pressure lowering agents | William B. Dickinson | 1981-11-03 |
| 4297360 | 5-(Pyridinyl)pyridine-2,3-diamines, preparation thereof and their cardiotonic use | Chester J. Opalka, Jr., Donald F. Page | 1981-10-27 |
| 4297362 | 4-(3,4-Diaminophenyl)pyridine or salts, and use thereof as cardiotonic | Baldev Singh | 1981-10-27 |
| 4297363 | 2-Amino-3(4 or 5)-(pyridinyl)phenols and their use as cardiotonics | Baldev Singh | 1981-10-27 |
| 4294837 | 1,3-Dihydro-6-(pyridinyl)-2H-imidazo[4,5-b]pyridin-2-ones and -imidazo[4,5-b]pyridine-2-thiones and their cardiotonic use | Chester J. Opalka, Jr., Donald F. Page | 1981-10-13 |
| 4294836 | 1,3-Dihydro-6-(pyridinyl)-2H-imidazo[4,5-b]pyridin-2-ones and -imidazo[4,5-b]-pyridine-2-thiones and their cardiotonic use | Ruth P. Brundage | 1981-10-13 |
| 4276293 | Compositions and their preparation | Chester J. Opalka, Jr., Donald F. Page | 1981-06-30 |
| 4271168 | Selected 3-acylamino-5-[4(or 3)-pyridinyl]-2(1H)-pyridinones | Chester J. Opalka, Jr. | 1981-06-02 |
| 4265895 | 1,2-Dihydro-5-pyridinyl-3H-pyrazolo[3,4-b]pyridin-3-ones and their use as cardiotonics | Monte D. Gruett | 1981-05-05 |
| 4264612 | Lower-alkyl 2-halo-5-(pyridinyl)nicotinates, their preparation and use as cardiotonics | Monte D. Gruett | 1981-04-28 |
| 4264603 | 5-(Pyridinyl)-1H-pyrazolo[3,4-b]pyridine-3-amines, their use as cardiotonics and their preparation | Monte D. Gruett | 1981-04-28 |
| 4225601 | 3-Hydroxy or hydroxymethyl-5-(4-pyridinyl)2(1H)-pyridinones, useful as cardiotonic agents and their preparation | Chester J. Opalka, Jr. | 1980-09-30 |
| 4225715 | Preparation of 3-amino(or carbamyl)-5-(pyridinyl)-2(1H)-pyridinones | Chester J. Opalka, Jr. | 1980-09-30 |
| 4223149 | Process for producing 3-cyano-5-(pyridinyl)-2(1H)-pyridinones | Chester J. Opalka, Jr. | 1980-09-16 |
| 4199586 | Di-(lower-alkyl) N-[1,2-dihydro-2-oxo-5-(pyridinyl)-3-pyridinyl]amino-methylanemalonates | Chester J. Opalka, Jr. | 1980-04-22 |