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David William Bjorkquist
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Olympia, WA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Methods of treating water
Patent number
7,749,394
Issue date
Jul 6, 2010
The Procter & Gamble Company
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Methods for treating water
Patent number
7,740,765
Issue date
Jun 22, 2010
The Procter & Gamble Company
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Methods for treating water
Patent number
7,740,766
Issue date
Jun 22, 2010
The Procter & Gamble Company
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Water filter materials and water filters and processes for using th...
Patent number
7,614,506
Issue date
Nov 10, 2009
PUR Water Purification Products Inc.
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Water filter materials, water filters and kits containing particles...
Patent number
7,614,507
Issue date
Nov 10, 2009
PUR Water Purification Products Inc.
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Water filter materials, water filters and kits containing silver co...
Patent number
7,614,508
Issue date
Nov 10, 2009
PUR Water Purification Products Inc.
Michael Donovan Mitchell
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Laundry detergent compositions with a cationically charged dye main...
Patent number
6,753,307
Issue date
Jun 22, 2004
The Procter & Gamble Company
Rajan Keshav Panandiker
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Laundry detergent compositions with certain cationically charged dy...
Patent number
6,733,538
Issue date
May 11, 2004
The Procter & Gamble Company
Rajan Keshav Panandiker
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Flushable fibrous structures
Patent number
6,433,245
Issue date
Aug 13, 2002
The Procter & Gamble Company
David William Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Flushable fibrous structures
Patent number
6,127,593
Issue date
Oct 3, 2000
The Procter & Gamble Company
David William Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Fibers and pulps for papermaking based on chemical combination of p...
Patent number
5,698,074
Issue date
Dec 16, 1997
The Procter & Gamble Company
Robert Lee Barcus
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
.beta.-aminoalkyl and .beta.-N-peptidylaminoalkyl boronic acids
Patent number
5,488,157
Issue date
Jan 30, 1996
The Procter & Gamble Company
David W. Bjorkquist
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Fibers and pulps for papermaking based on chemical combination of p...
Patent number
5,443,899
Issue date
Aug 22, 1995
The Procter & Gamble Company
Robert L. Barcus
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
.beta.-aminoalkyl and .beta.-N-peptidylaminoalkyl boronic acids
Patent number
5,442,100
Issue date
Aug 15, 1995
The Procter & Gamble Company
David W. Bjorkquist
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid detergents with ortho-substituted phenylboronic acids for in...
Patent number
5,431,842
Issue date
Jul 11, 1995
The Procter & Gamble Company
Rajan K. Panandiker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid detergent compositions containing protease and certain .beta...
Patent number
5,354,491
Issue date
Oct 11, 1994
The Procter & Gamble Company
David W. Bjorkquist
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Fibers and pulps for papermaking based on chemical combination of p...
Patent number
5,160,789
Issue date
Nov 3, 1992
The Procter & Gamble Co.
Robert L. Barcus
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Temporary wet strength resins with nitrogen heterocyclic nonnucleop...
Patent number
5,138,002
Issue date
Aug 11, 1992
The Procter & Gamble Company
David W. Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Temporary wet strength resins and paper products containing same
Patent number
5,085,736
Issue date
Feb 4, 1992
The Procter & Gamble Company
David W. Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Poly(methyl vinyl ether-co-maleate) and polyol modified cellulostic...
Patent number
5,049,235
Issue date
Sep 17, 1991
The Procter & Gamble Company
Robert L. Barcus
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Temporary wet strength resins and paper products containing same
Patent number
5,008,344
Issue date
Apr 16, 1991
The Procter & Gamble Company
David W. Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Temporary wet strength resins with nitrogen heterocyclic nonnucleop...
Patent number
4,981,557
Issue date
Jan 1, 1991
The Procter & Gamble Company
David W. Bjorkquist
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Temporary wet strength resins
Patent number
4,603,176
Issue date
Jul 29, 1986
The Procter & Gamble Company
David W. Bjorkquist
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
FILTERS COMPRISING AN ACTIVATED CARBON PARTICLE COATED WITH PDADMAC...
Publication number
20170144132
Publication date
May 25, 2017
HELEN OF TROY LIMITED
Andrew Thomas Pearks
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
FILTERS COMPRISING AN ACTIVATED CARBON PARTICLE COATED WITH PDADMAC...
Publication number
20110139701
Publication date
Jun 16, 2011
PUR Water Purification Products, Inc.
Andrew Thomas Pearks
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHODS FOR TREATING WATER
Publication number
20090230061
Publication date
Sep 17, 2009
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHODS FOR TREATING WATER
Publication number
20090218291
Publication date
Sep 3, 2009
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHODS OF TREATING WATER
Publication number
20090218292
Publication date
Sep 3, 2009
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Water filter materials, water filters and kits containing particles...
Publication number
20040164018
Publication date
Aug 26, 2004
The Procter & Gamble Company
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Water filter materials, water filters and kits containing silver co...
Publication number
20040159596
Publication date
Aug 19, 2004
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Processes for manufacturing water filter materials and water filters
Publication number
20030217967
Publication date
Nov 27, 2003
The Procter & Gamble Company
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Water filter materials and water filters and processes for using th...
Publication number
20030217963
Publication date
Nov 27, 2003
The Procter & Gamble Company
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Water filters and processes for using the same
Publication number
20030038084
Publication date
Feb 27, 2003
The Procter & Gamble Company
Michael Donovan Mitchell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL