Robert O. York

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Polymer foams containing blocking agents
- Patent number 5,912,279
- Issue date Jun 15, 1999
- E. I. Du Pont de Nemours and Company
- Howard Sims Hammel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polystyrene foams containing 1,1-defluoroethane
- Patent number 5,204,169
- Issue date Apr 20, 1993
- E. I. Du Pont de Nemours and Company
- Robert O. York
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Foam blowing agent composition and process for producing foams
- Patent number 5,147,896
- Issue date Sep 15, 1992
- E. I. Du Pont de Nemours and Company
- Robert O. York
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Degradable foam materials
- Patent number 5,134,171
- Issue date Jul 28, 1992
- E. I. Du Pont de Nemours and Company
- Howard S. Hammel
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...