David B. Mitchell

Person

Palatine, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method for processing sludge
- Patent number 11,407,668
- Issue date Aug 9, 2022
- Ecolab USA Inc.
- David B. Mitchell
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Activated sludge process in wastewater treatment
- Patent number 8,435,409
- Issue date May 7, 2013
- Ecolab USA Inc.
- David B. Mitchell
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Water treatment
- Patent number 8,075,779
- Issue date Dec 13, 2011
- Environmental Management Corporation
- David Mitchell
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Treatment of aqueous systems using a chemically modified tannin
- Patent number 5,977,287
- Issue date Nov 2, 1999
- BetzDearborn Inc.
- David Brian Mitchell
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermo responsive method of removing cured paint
- Patent number 5,904,158
- Issue date May 18, 1999
- BetzDearborn Inc.
- David B. Mitchell
- B44 - DECORATIVE ARTS
Information Patent Grant
Treatment of aqueous systems using a chemically modified tannin
- Patent number 5,843,337
- Issue date Dec 1, 1998
- BetzDearborn Inc.
- David Brian Mitchell
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Treatment of Aqueous systems using a chemically modified tannin
- Patent number 5,830,315
- Issue date Nov 3, 1998
- BetzDearborn Inc.
- David Brian Mitchell
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Paint spray booth organic detackification treatment
- Patent number 5,298,186
- Issue date Mar 29, 1994
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Emulsion breaking using cationic quaternary ammonium starch/gums
- Patent number 5,248,449
- Issue date Sep 28, 1993
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Paint spray booth treatment of waterborne coatings
- Patent number 5,248,440
- Issue date Sep 28, 1993
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Emulsion breaking using cationic quaternary ammonium starch/gums
- Patent number 5,169,562
- Issue date Dec 8, 1992
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for controlling overspray in paint spray booths
- Patent number 4,948,513
- Issue date Aug 14, 1990
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for controlling overspray in paint spray booths
- Patent number 4,913,825
- Issue date Apr 3, 1990
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for controlling overspray in paint spray booths
- Patent number 4,904,393
- Issue date Feb 27, 1990
- W. R. Grace & Co.-Conn.
- David B. Mitchell
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
Water Treatment
- Publication number 20120061299
- Publication date Mar 15, 2012
- ENVIRONMENTAL MANAGEMENT CORPORATION
- David Mitchell
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ACTIVATED SLUDGE PROCESS IN WASTEWATER TREATMENT
- Publication number 20110290722
- Publication date Dec 1, 2011
- David B. Mitchell
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
METHOD OF TREATING WASTEWATER
- Publication number 20080142447
- Publication date Jun 19, 2008
- David Brian MITCHELL
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

David B. Mitchell

Person

Patents Grantslast 30 patents

Method for processing sludge

Activated sludge process in wastewater treatment

Water treatment

Treatment of aqueous systems using a chemically modified tannin

Thermo responsive method of removing cured paint

Treatment of aqueous systems using a chemically modified tannin

Treatment of Aqueous systems using a chemically modified tannin

Paint spray booth organic detackification treatment

Emulsion breaking using cationic quaternary ammonium starch/gums

Paint spray booth treatment of waterborne coatings

Emulsion breaking using cationic quaternary ammonium starch/gums

Method for controlling overspray in paint spray booths

Method for controlling overspray in paint spray booths

Method for controlling overspray in paint spray booths

Patents Applicationslast 30 patents

Water Treatment

ACTIVATED SLUDGE PROCESS IN WASTEWATER TREATMENT

METHOD OF TREATING WASTEWATER