Guy W. Roy

Follow

Person

Danville, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Wastewater disposal system
- Patent number 6,319,405
- Issue date Nov 20, 2001
- Guy W. Roy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Membrane process for treating sanitary wastewater
- Patent number 5,837,142
- Issue date Nov 17, 1998
- Great Circle Associates
- Steven B. Mullerheim
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE