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Donald F. Page
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East Greenbush, NY, US
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Patents Grants
last 30 patents
Information
Patent Grant
Preparation of 5-(hydroxy- and/or aminophenyl-6-lower-alkyl)-2(1H)-...
Patent number
4,599,423
Issue date
Jul 8, 1986
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
1,2-Dihydro-2-oxo-5-(hydroxy-and/or amino-phenyl)-nicotinonitriles...
Patent number
4,559,352
Issue date
Dec 17, 1985
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
3-Amino-5-(hydroxy- and/or aminophenyl)-6-(lower-alkyl)-2(1H)-pyrid...
Patent number
4,515,797
Issue date
May 7, 1985
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
5-(Hydroxy- and/or amino-phenyl)-6-(lower-alkyl)-2-(1H)-pyridinones...
Patent number
4,465,686
Issue date
Aug 14, 1984
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
5(Pyridinyl)pyridin-2-amines
Patent number
4,420,617
Issue date
Dec 13, 1983
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-Amino-6-(pyridinyl)-3H-imidazo[4,5-b]pyridines and their cardioto...
Patent number
4,391,811
Issue date
Jul 5, 1983
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Use of 4-[4(or 3)-aminophenyl]pyridines as cardiotonic agents
Patent number
4,377,585
Issue date
Mar 22, 1983
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
N-[4-(4-Pyridinyl)phenyl]ureas and their cardiotonic use
Patent number
4,376,775
Issue date
Mar 15, 1983
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-Substituted amino-5-(pyridinyl)-nicotinamides and their cardioton...
Patent number
4,374,141
Issue date
Feb 15, 1983
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-(Substituted-amino)-5-(pyridinyl-nicotinonitriles, and their card...
Patent number
4,362,734
Issue date
Dec 7, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Pyridinyl-pyridines
Patent number
4,351,941
Issue date
Sep 28, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
5-(Pyridinyl)pyridine-2-hydrazines, their preparation and their car...
Patent number
4,331,672
Issue date
May 25, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
1H-Indole-2,3-dione derivatives
Patent number
4,322,533
Issue date
Mar 30, 1982
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
4-[4(or 3)-Acylaminophenyl]pyridines and their use as cardiotonics
Patent number
4,317,827
Issue date
Mar 2, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
5-(Pyridinyl)-6-(lower-alkyl)-2(1H)-pyridinones, 1,2-dihydro-2-oxo-...
Patent number
4,312,875
Issue date
Jan 26, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Production of imidazo[4,5-b]pyridin-2-ones or thiones
Patent number
4,309,537
Issue date
Jan 5, 1982
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
5-(Pyridinyl)pyridine-2,3-diamines, preparation thereof and their c...
Patent number
4,297,360
Issue date
Oct 27, 1981
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
1,3-Dihydro-6-(pyridinyl)-2H-imidazo[4,5-b]pyridin-2-ones and -imid...
Patent number
4,294,837
Issue date
Oct 13, 1981
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compositions and their preparation
Patent number
4,276,293
Issue date
Jun 30, 1981
Sterling Drug Inc.
George Y. Lesher
C07 - ORGANIC CHEMISTRY