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Darrell L. Sparks
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Kennebunk, ME, US
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Patents Grants
last 30 patents
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Patent Grant
Plastic sheet offering matte appearance and method of preparation
Patent number
7,816,000
Issue date
Oct 19, 2010
Evonik Cyro, LLC
Darrell L. Sparks
B32 - LAYERED PRODUCTS
Patents Applications
last 30 patents
Information
Patent Application
Plastic sheet product offering matte appearance and method of prepa...
Publication number
20080226872
Publication date
Sep 18, 2008
Darrell L. Sparks
B32 - LAYERED PRODUCTS
Information
Patent Application
Composite sheet with mirror finish
Publication number
20060070699
Publication date
Apr 6, 2006
CYRO Industries
Darrell L. Sparks
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Plastic sheet product offering matte appearance and method of prepa...
Publication number
20060019113
Publication date
Jan 26, 2006
CYRO Industries
Darrell L. Sparks
B32 - LAYERED PRODUCTS
Information
Patent Application
Composite sheet with mirror finish
Publication number
20040099369
Publication date
May 27, 2004
Darrell L. Sparks
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Plastic sheet product offering matte appearance and method of prepa...
Publication number
20010036543
Publication date
Nov 1, 2001
Darrell L. Sparks
B32 - LAYERED PRODUCTS