William J. Drefko

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Kearny, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Proliferous copolymer of vinyl pyrrolidone and vinyl acetate
- Patent number 6,806,334
- Issue date Oct 19, 2004
- ISP Investments Inc.
- Edward G. Malawer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Proliferous copolymer of vinyl pyrrolidone and vinyl acetate
- Patent number 6,620,900
- Issue date Sep 16, 2003
- ISP Investments Inc.
- Edward G. Malawer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Proliferous copolymer of vinyl pyrrolidone and vinyl acetate
- Publication number 20040054066
- Publication date Mar 18, 2004
- ISP INVESTMENTS INC.
- Edward G. Malawer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROLIFEROUS COPOLYMER OF VINYL PYRROLIDONE AND VINYL ACETATE
- Publication number 20030153705
- Publication date Aug 14, 2003
- ISP INVESTMENTS INC.
- Edward G. Malawer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...