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William C. Lieffers
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Fullerton, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Geothermal power plant
Patent number
4,420,938
Issue date
Dec 20, 1983
Union Oil Company of California
William C. Lieffers
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
Method for gas capping of idle geothermal steam wells
Patent number
4,407,366
Issue date
Oct 4, 1983
Union Oil Company of California
William C. Lieffers
E21 - EARTH DRILLING MINING
Information
Patent Grant
Integrated method for pollution abatement and energy derivation fro...
Patent number
4,259,300
Issue date
Mar 31, 1981
Union Oil Company of California
William C. Lieffers
F24 - HEATING RANGES VENTILATING
Information
Patent Grant
Process for integrating treatment of and energy derivation from geo...
Patent number
4,244,190
Issue date
Jan 13, 1981
Union Oil Company of California
William C. Lieffers
F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information
Patent Grant
Motionless mixer and method for removing scaled mixing elements the...
Patent number
4,183,682
Issue date
Jan 15, 1980
Union Oil Company of California
William C. Lieffers
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL