David M. Ritchie

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Princeton Junction, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
6-7-dimethoxy-1,2-dihydro-2-arylquinazoline-3-oxides
- Patent number 5,030,635
- Issue date Jul 9, 1991
- Ortho Pharmaceutical Corporation
- Donald W. Combs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
6,7-dimethoxy-1,2-dihydro-2-arylquinazoline-3-oxides
- Patent number 4,963,554
- Issue date Oct 16, 1990
- Ortho Pharmaceutical Corporation
- Donald W. Combs
- C07 - ORGANIC CHEMISTRY