Thomas W. Weir

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Berwyn, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for purifying N-methyl-2-pyrrolidone
- Patent number 7,153,978
- Issue date Dec 26, 2006
- Lyondell Chemical Technology, L.P.
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of a propylene glycol antifreeze contai...
- Patent number 5,651,916
- Issue date Jul 29, 1997
- Prestone Products Corporation
- Thomas W. Weir
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Method for purifying N-methyl-2-pyrrolidone
- Publication number 20050197502
- Publication date Sep 8, 2005
- Andrew P. Kahn
- C07 - ORGANIC CHEMISTRY