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Hans J. Kohnert
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Esslingen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Multipart cooled piston for a combustion engine
Patent number
6,789,460
Issue date
Sep 14, 2004
Mahle GmbH
Hans-Jürgen Köhnert
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Single-part cooling channel piston for a combustion engine
Patent number
6,698,392
Issue date
Mar 2, 2004
Mahle GmbH
Hans-Jürgen Köhnert
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Cast piston with fiber-reinforcement
Patent number
4,662,326
Issue date
May 5, 1987
Mahle GmbH
Hans-Jurgen Kohnert
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Aluminum base alloy piston for internal combustion engines with mec...
Patent number
4,633,764
Issue date
Jan 6, 1987
Mahle GmbH
Hans-Jurgen Kohnert
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Piston for an internal combustion engine and method for producing same
Patent number
4,334,507
Issue date
Jun 15, 1982
Mahle GmbH
Hans J. Kohnert
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Austenitic cast iron
Patent number
4,129,309
Issue date
Dec 12, 1978
Mahle GmbH
Hans J. Kohnert
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
Information
Patent Application
Multipart cooled piston for a combustion engine
Publication number
20040055460
Publication date
Mar 25, 2004
Hans-Jurgen Kohnert
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...