Graham D. Walmsley

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Hickory, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for the production of polyurethane foam using...
- Patent number 5,656,678
- Issue date Aug 12, 1997
- Hickory Springs Manufacturing Company
- Graham D. Walmsley
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Fire-retardant polyurethane foams and method of producing
- Patent number 5,569,682
- Issue date Oct 29, 1996
- Hickory Springs Manufacturing Company
- Graham D. Walmsley
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane foams
- Patent number 5,536,757
- Issue date Jul 16, 1996
- Hickory Springs Manufacturing Company
- Graham D. Walmsley
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane foams
- Patent number 5,506,278
- Issue date Apr 9, 1996
- Hickory Springs Manufacturing Company
- Graham D. Walmsley
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the production of polyurethane foam
- Patent number 5,120,771
- Issue date Jun 9, 1992
- Hickory Springs Manufacturing Co.
- Graham D. Walmsley
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL