Al W. Bourquin

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Seattle, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Biodegradation of aliphatic chloroethylene compounds
- Patent number 5,071,755
- Issue date Dec 10, 1991
- Ecova Corporation
- Michael J. K. Nelson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Biodegradation of chloroethylene compounds
- Patent number 4,959,315
- Issue date Sep 25, 1990
- The United States of America as represented by the Administrator of the Envir...
- Michael J. K. Nelson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for stimulating biodegradation of halogenated aliphatic hydr...
- Patent number 4,925,802
- Issue date May 15, 1990
- Ecova Corporation
- Michael J. K. Nelson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE