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Michael J. Semmens
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Minneapolis, MN, US
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last 30 patents
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Patent Grant
High efficiency microbubble aeration
Patent number
5,674,433
Issue date
Oct 7, 1997
Regents of The University of Minnesota
Michael J. Semmens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Bubbleless gas transfer device and process
Patent number
5,034,164
Issue date
Jul 23, 1991
Michael J. Semmens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of removing organic volatile and semi-volatile contaminants...
Patent number
4,960,520
Issue date
Oct 2, 1990
The Regents of the University of Minnesota
Michael J. Semmens
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for metal and cyanide recovery from plating baths and rinse...
Patent number
4,895,659
Issue date
Jan 23, 1990
Regents of The University of Minnesota
Michael J. Semmens
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR