Peter P. Klemchuk

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Yorktown Heights, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Pyromellitic dimiides of 3,5-dialkyl-4-hydroxyphenylsubstituted amines
- Patent number 4,116,930
- Issue date Sep 26, 1978
- Ciba-Geigy Corporation
- Martin Dexter
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Light stabilized polymer compositions
- Patent number 3,935,163
- Issue date Jan 27, 1976
- Ciba-Geigy Corporation
- John D. Spivack
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Light stabilized polymer compositions
- Patent number 3,935,164
- Issue date Jan 27, 1976
- Ciba-Geigy Corporation
- John D. Spivack
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...