Robert A. Irvin

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Marietta, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Radiation responsive relief imageable plastic laminate
- Patent number 4,248,960
- Issue date Feb 3, 1981
- W. R. Grace & Co.
- Paul R. Hein
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Polythiol effect, curable monoalkenyl aromatic-diene and ene compos...
- Patent number 4,179,531
- Issue date Dec 18, 1979
- W. R. Grace & Co.
- Paul R. Hein
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...