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Joseph M. Ballantyne
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Ithaca, NY, US
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last 30 patents
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Patent Grant
Directional control method and apparatus for ring laser
Patent number
5,764,681
Issue date
Jun 9, 1998
Cornell Research Foundation, Inc.
Joseph M. Ballantyne
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Tunnel injection of minority carriers in semi-conductors
Patent number
4,161,814
Issue date
Jul 24, 1979
Cornell Research Foundation, Inc.
Joseph M. Ballantyne
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Tunnel injection of minority carriers in semi-conductors
Patent number
4,065,780
Issue date
Dec 27, 1977
Cornell Research Foundation, Inc.
Joseph M. Ballantyne
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Scanning electron microscope fabrication of optical gratings
Patent number
3,961,102
Issue date
Jun 1, 1976
Cornwell Research Foundation, Inc.
Joseph M. Ballantyne
G02 - OPTICS