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William V. Block
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Minneapolis, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Methods and compositions for coating aluminum substrates
Patent number
9,039,821
Issue date
May 26, 2015
BIRCHWOOD LABORATORIES LLC
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Methods and compositions for coating aluminum substrates
Patent number
8,691,346
Issue date
Apr 8, 2014
Birchwood Laboratories, Inc.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Ferrous metal magnetite coating processes and reagents
Patent number
8,287,663
Issue date
Oct 16, 2012
Birchwood Laboratories, Inc.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Ferrous metal magnetite coating processes and reagents
Patent number
7,964,044
Issue date
Jun 21, 2011
Birchwood Laboratories, Inc.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Bath composition for converting surface of ferrous metal to mixed o...
Patent number
7,625,439
Issue date
Dec 1, 2009
Birchwood Laboratories, Inc.
Bryce D. Devine
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Process for making bath composition for converting surface of ferro...
Patent number
7,481,872
Issue date
Jan 27, 2009
Birchwood Laboratories, Inc.
Bryce D. Devine
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Hybrid metal oxide/organometallic conversion coating for ferrous me...
Patent number
7,144,599
Issue date
Dec 5, 2006
Birchwood Laboratories, Inc.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Metal coloring process and solutions therefor
Patent number
6,899,956
Issue date
May 31, 2005
Birchwood Laboratories, Inc.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and method for metal coloring process
Patent number
6,899,769
Issue date
May 31, 2005
Birchwood Laboratories, Inc.
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and method for metal coloring process
Patent number
6,695,931
Issue date
Feb 24, 2004
Birchwood Laboratories, Inc.
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and method for metal coloring process
Patent number
6,576,346
Issue date
Jun 10, 2003
Birchwood Laboratories, Inc.
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and method for metal coloring process
Patent number
6,527,873
Issue date
Mar 4, 2003
Birchwood Laboratories, Inc.
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Composition and method for metal coloring process
Patent number
6,309,476
Issue date
Oct 30, 2001
Birchwood Laboratories, Inc.
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Polyalkylene polyamine-glycol accelerators for paint removal compos...
Patent number
4,594,176
Issue date
Jun 10, 1986
Economics Laboratory, Inc.
Dennis F. Mahoney
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Aqueous alkaline polyamine paint stripping compositions
Patent number
4,537,705
Issue date
Aug 27, 1985
Economics Laboratory, Inc.
Dennis F. Mahoney
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Paint removal composition spray method for paint booths
Patent number
4,220,456
Issue date
Sep 2, 1980
Fremont Industries, Inc.
William V. Block
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Wood finish remover
Patent number
3,979,219
Issue date
Sep 7, 1976
Fremont Industries, Inc.
Edward H. Chang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
Information
Patent Application
METHODS AND COMPOSITIONS FOR COATING ALUMINUM SUBSTRATES
Publication number
20140190368
Publication date
Jul 10, 2014
BIRCHWOOD LABORATORIES, INC.
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Ferrous Metal Magnetite Coating Processes and Reagents
Publication number
20110308668
Publication date
Dec 22, 2011
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
METHODS AND COMPOSITIONS FOR COATING ALUMINUM SUBSTRATES
Publication number
20090280258
Publication date
Nov 12, 2009
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Hybrid metal oxide/organometallic conversion coating for ferrous me...
Publication number
20060014042
Publication date
Jan 19, 2006
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Composition and method for metal coloring process
Publication number
20040250748
Publication date
Dec 16, 2004
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Metal coloring process and solutions therefor
Publication number
20030205298
Publication date
Nov 6, 2003
William V. Block
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Composition and method for metal coloring process
Publication number
20030079807
Publication date
May 1, 2003
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
Composition and method for metal coloring process
Publication number
20030022007
Publication date
Jan 30, 2003
Keith N. Ravenscroft
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...