Keith N. Ravenscroft

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Long Lake, MN, US

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Patents Grantslast 30 patents

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...

Patents Applicationslast 30 patents

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
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...