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Electron emitting element
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Patent number 5,838,019
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Issue date Nov 17, 1998
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Canon Kabushiki Kaisha
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Takeo Tsukamoto
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H01 - BASIC ELECTRIC ELEMENTS
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Electron emission elements
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Patent number 5,304,815
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Issue date Apr 19, 1994
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Canon Kabushiki Kaisha
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Akira Suzuki
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H01 - BASIC ELECTRIC ELEMENTS
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Cold cathode device
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Patent number 4,994,708
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Issue date Feb 19, 1991
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Canon Kabushiki Kaisha
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Akira Shimizu
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H01 - BASIC ELECTRIC ELEMENTS
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Thermal recording head
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Patent number 4,983,993
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Issue date Jan 8, 1991
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Canon Kabushiki Kaisha
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Masao Sugata
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Thermal recording head
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Patent number 4,845,513
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Issue date Jul 4, 1989
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Canon Kabushiki Kaisha
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Masao Sugata
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Electron emission device
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Patent number 4,833,507
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Issue date May 23, 1989
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Canon Kabushiki Kaisha
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Akira Shimizu
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H01 - BASIC ELECTRIC ELEMENTS
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Electron emitting apparatus
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Patent number 4,825,082
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Issue date Apr 25, 1989
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Canon Kabushiki Kaisha
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Masahiko Okunuki
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H01 - BASIC ELECTRIC ELEMENTS
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Electron emission device
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Patent number 4,810,934
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Issue date Mar 7, 1989
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Canon Kabushiki Kaisha
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Isamu Shimoda
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H01 - BASIC ELECTRIC ELEMENTS