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name:-0.00051403045654297
name:-0.013674974441528
name:-0.00056695938110352
Opalka, Jr.; Chester J. Patent Filings

Opalka, Jr.; Chester J.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Opalka, Jr.; Chester J..The latest application filed is for "preparation of 5-(hydroxy- and/or aminophenyl-6-lower-alkyl)-2(1h)-pyridinones".

Company Profile
0.14.0
  • Opalka, Jr.; Chester J. - Schodack NY
  • Opalka, Jr.; Chester J. - Rensselaer NY
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Preparation of 5-(hydroxy- and/or aminophenyl-6-lower-alkyl)-2(1H)-pyridinones
Grant 4,599,423 - Lesher , et al. July 8, 1
1986-07-08
3-Amino-5-(hydroxy- and/or aminophenyl)-6-(lower-alkyl)-2(1H)-pyridinones and cardiotonic use thereof
Grant 4,515,797 - Lesher , et al. May 7, 1
1985-05-07
5-(Hydroxy- and/or amino-phenyl)-6-(lower-alkyl)-2-(1H)-pyridinones, their cardiotonic use and preparation
Grant 4,465,686 - Lesher , et al. August 14, 1
1984-08-14
2-Amino-6-(pyridinyl)-3H-imidazo[4,5-b]pyridines and their cardiotonic use
Grant 4,391,811 - Lesher , et al. July 5, 1
1983-07-05
Production of imidazo[4,5-b]pyridin-2-ones or thiones
Grant 4,309,537 - Lesher , et al. January 5, 1
1982-01-05
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
Grant 4,294,837 - Lesher , et al. October 13, 1
1981-10-13
Compositions and their preparation
Grant 4,276,293 - Lesher , et al. June 30, 1
1981-06-30
Selected 3-acylamino-5-[4(or 3)-pyridinyl]-2(1H)-pyridinones
Grant 4,271,168 - Lesher , et al. June 2, 1
1981-06-02
Preparation of 3-amino(or carbamyl)-5-(pyridinyl)-2(1H)-pyridinones
Grant 4,225,715 - Lesher , et al. September 30, 1
1980-09-30
Di-(lower-alkyl) N-[1,2-dihydro-2-oxo-5-(pyridinyl)-3-pyridinyl]amino-methylanemalonates
Grant 4,199,586 - Lesher , et al. April 22, 1
1980-04-22
1,2-Dihydro-2-oxo-5-(pyridinyl)nicotinamides
Grant 4,137,233 - Lesher , et al. January 30, 1
1979-01-30
5-(Pyridinyl)-2(1H)-pyridinones
Grant 4,107,315 - Lesher , et al. August 15, 1
1978-08-15
Cyclic alkylidenyl N-[6-(amino)-3-pyridazinyl]aminomethylenemalonates
Grant 4,104,385 - Lesher , et al. August 1, 1
1978-08-01
3-Amino-5-(pyridinyl)-2(1H)-pyridinones
Grant 4,072,746 - Lesher , et al. February 7, 1
1978-02-07

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