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David A. Whelan
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Chatworth, CA, US
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last 30 patents
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Patent Grant
Correlation radiometer imaging system
Patent number
5,708,442
Issue date
Jan 13, 1998
Hughes Electronics
David A. Whelan
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ferro-electric frequency selective surface radome
Patent number
5,600,325
Issue date
Feb 4, 1997
Hughes Electronics
David A. Whelan
G01 - MEASURING TESTING
Information
Patent Grant
Microwave-absorbing materials containing polar icosahedral molecula...
Patent number
5,574,077
Issue date
Nov 12, 1996
Thomas K. Dougherty
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Microwave-absorbing materials containing polar icosahedral molecula...
Patent number
5,317,058
Issue date
May 31, 1994
Hughes Aircraft Company
Thomas K. Dougherty
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Honeycomb cross-polarized load
Patent number
5,311,199
Issue date
May 10, 1994
John Fraschilla
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Asymmetrically flared notch radiator
Patent number
5,187,489
Issue date
Feb 16, 1993
Hughes Aircraft Company
David A. Whelan
H01 - BASIC ELECTRIC ELEMENTS