Leonard J. Czuba

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New London, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Compositions containing N-nitrosamine formation or oxidation inhibi...
- Patent number 4,251,563
- Issue date Feb 17, 1981
- Pfizer Inc.
- Gordon D. Gruetzmacher
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Pyrimidal [2,3,d]Pyrimidin-4(3H)-ones as antiallergy agents
- Patent number 4,134,981
- Issue date Jan 16, 1979
- Pfizer Inc.
- Thomas H. Althuis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fused pyrimidin-4(3H)-ones as antiallergy agents
- Patent number 4,120,962
- Issue date Oct 17, 1978
- Pfizer Inc.
- Thomas H. Althuis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fused pyrimidin-4(3H)-ones as antiallergy agents
- Patent number 4,044,134
- Issue date Aug 23, 1977
- Pfizer Inc.
- Thomas H. Althuis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Antibacterial 1,3-dihydrofuro[3,4-b]quinoxaline 4,9-dioxides
- Patent number 3,991,053
- Issue date Nov 9, 1976
- Pfizer Inc.
- Leonard J. Czuba
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Fused pyrimidin-4(3H)-ones as antiallergy agents
- Patent number 3,974,161
- Issue date Aug 10, 1976
- Pfizer Inc.
- Thomas H. Althuis
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4(Tetrazol-5-yl)-butyltriphenylphosphonium halide compounds
- Patent number 3,953,466
- Issue date Apr 27, 1976
- Pfizer Inc.
- Hans-Jurgen E. Hess
- C07 - ORGANIC CHEMISTRY