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Compression Technologies, Inc.
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Eden Prairie, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Fabrication of pressure vessels
Patent number
5,235,837
Issue date
Aug 17, 1993
Compression Technologies, Inc.
John A. Werner
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Rotary epitrochoidal compressor
Patent number
5,046,932
Issue date
Sep 10, 1991
Compression Technologies, Inc.
Ralph M. Hoffmann
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Apparatus and method for milling a trochoidal rotor
Patent number
4,911,043
Issue date
Mar 27, 1990
Compression Technologies, Inc.
Ralph M. Hoffmann
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Swiveling mount for the outlet of a pressure vessel
Patent number
4,827,983
Issue date
May 9, 1989
Compression Technologies, Inc.
Ralph M. Hoffmann
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Outer envelope trochoidal rotary device having a two piece rotor as...
Patent number
4,778,362
Issue date
Oct 18, 1988
Compression Technologies, Inc.
Ralph Hoffmann
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Outer envelope trochoidal rotary device having a rotor assembly hav...
Patent number
4,721,445
Issue date
Jan 26, 1988
Compression Technologies, Inc.
Ralph Hoffmann
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES