Andrew G. Johnson, JR.

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Barre, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Algae resistant roofing granules with controlled algaecide leaching...
- Patent number 7,811,630
- Issue date Oct 12, 2010
- CertainTeed Corporation
- Keith C. Hong
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
ALGAE RESISTANT ROOFING GRANULES WITH CONTROLLED ALGAECIDE LEACHING...
- Publication number 20110217515
- Publication date Sep 8, 2011
- Keith C. Hong
- E04 - BUILDING