Weilian Lang

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Austin, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Synthetic multiple quaternary ammonium salts
- Patent number 7,214,806
- Issue date May 8, 2007
- Sachem, Inc.
- Weilian Lang
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for recovering organic hydroxides from waste solutions
- Patent number 6,217,743
- Issue date Apr 17, 2001
- Sachem, Inc.
- Roger D. Moulton
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Synthetic multiple quaternary ammonium salts
- Publication number 20050194113
- Publication date Sep 8, 2005
- Weilian Lang
- C07 - ORGANIC CHEMISTRY