Midamerican Energy Holdings Company

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Omaha, NE, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of removing iron and calcium from a geothermal brine
- Patent number 8,313,653
- Issue date Nov 20, 2012
- MidAmerican Energy Holdings Company
- John L. Featherstone
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for producing electrolytic manganese dioxide
- Patent number 7,776,202
- Issue date Aug 17, 2010
- MidAmerican Energy Holdings Company
- John L. Featherstone
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for producing electrolytic manganese dioxide from geotherma...
- Patent number 6,682,644
- Issue date Jan 27, 2004
- MidAmerican Energy Holdings Company
- John L. Featherstone
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of zinc from geothermal brines
- Patent number 6,458,184
- Issue date Oct 1, 2002
- MidAmerican Energy Holdings Company
- John L. Featherstone
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for cleaning fouled ion exchange resins
- Patent number 6,080,696
- Issue date Jun 27, 2000
- MidAmerican Energy Holdings Company
- Hilton Duke
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

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Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR DEPLETING CALCIUM AND/OR IRON FROM GEOTHERMAL BRINES
- Publication number 20130068697
- Publication date Mar 21, 2013
- Midamerican Energy Holdings Company
- John L. FEATHERSTONE
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR

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Trademarklast 30 trademarks

Information Trademark
76578093 - ALASKA GAS TRANSMISSION COMPANY A MIDAMERICAN ENERGY HOL...
- Serial number 76578093
- Registration number 3071537
- Filing date Feb 27, 2004
- MidAmerican Energy Holdings Company
- 39 - Transport
Information Trademark
75915470 - MIDAMERICAN ENERGY
- Serial number 75915470
- Registration number 2521780
- Filing date Feb 2, 2000
- MidAmerican Energy Holdings Company
- 39 - Transport
Information Trademark
75780735
- Serial number 75780735
- Registration number 2494911
- Filing date Aug 23, 1999
- MidAmerican Energy Holdings Company
- 36 - Insurance
Information Trademark
75780736
- Serial number 75780736
- Registration number 2494912
- Filing date Aug 23, 1999
- MidAmerican Energy Holdings Company
- 36 - Insurance
Information Trademark
75780727 - MIDAMERICAN ENERGY
- Serial number 75780727
- Filing date Aug 23, 1999
- MidAmerican Energy Holdings Company
- 36 - Insurance
Information Trademark
75585598 - MIDAMERICAN HOME SERVICES
- Serial number 75585598
- Filing date Nov 12, 1998
- MidAmerican Energy Holdings Company
- 36 - Insurance