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Ellen M. Meyer
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Doylestown, PA, US
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last 30 patents
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Patent Grant
Preparation of water soluble graft copolymers
Patent number
5,789,488
Issue date
Aug 4, 1998
BetzDearborn Inc.
Keith A. Bair
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Polymeric dithiocarbamate acid salt compositions and method of use
Patent number
5,658,487
Issue date
Aug 19, 1997
Betz Laboratories, Inc.
William S. Carey
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Polymeric dithiocarbamic acid salt compositions and methods of use
Patent number
5,594,096
Issue date
Jan 14, 1997
BetzDearborn Inc.
William S. Carey
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Water treatment methods
Patent number
5,575,924
Issue date
Nov 19, 1996
BetzDearborn Inc.
Keith A. Bair
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Polymeric dithiocarbamic acid salt compositions and methods of use
Patent number
5,523,002
Issue date
Jun 4, 1996
Betz Laboratories, Inc.
William S. Carey
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Polymeric dithiocarbamate acid salt compositions and method of use
Patent number
5,500,133
Issue date
Mar 19, 1996
Betz Laboratories, Inc.
William S. Carey
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Methods of removing oil and metal ions from oily wastewater
Patent number
5,256,304
Issue date
Oct 26, 1993
Betz Laboratories, Inc.
Ellen M. Meyer
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE