Hartwick A. Haugen

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Roseville, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Encapsulant compositions for use in signal transmission devices
- Patent number 5,169,716
- Issue date Dec 8, 1992
- Minnesota Mining and Manufacturing Company
- Thomas S. Croft
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Encapsulant compositions for use in signal transmission devices
- Patent number 4,985,475
- Issue date Jan 15, 1991
- Minnesota Mining and Manufacturing
- Thomas S. Croft
- G02 - OPTICS
Information Patent Grant
Encapsulant compositions for use in signal transmission devices
- Patent number 4,857,563
- Issue date Aug 15, 1989
- Minnesota Mining and Manufacturing Company
- Thomas S. Croft
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Soap-thickened reenterable gelled encapsulants
- Patent number 4,756,851
- Issue date Jul 12, 1988
- Minnesota Mining and Manufacturing Company
- James E. Billigmeier
- H01 - BASIC ELECTRIC ELEMENTS