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Yuichi Handa
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Atsugi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical fiber apparatus provided with demultiplexing/multiplexing u...
Patent number
6,334,014
Issue date
Dec 25, 2001
Canon Kabushiki Kaisha
Jun Nitta
G02 - OPTICS
Information
Patent Grant
Polarization-mode selective semiconductor laser with a bending chan...
Patent number
6,008,675
Issue date
Dec 28, 1999
Canon Kabushiki Kaisha
Yuichi Handa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Diffraction grating with alternately-arranged different regions, op...
Patent number
5,926,497
Issue date
Jul 20, 1999
Canon Kabushiki Kaisha
Jun Nitta
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Oscillation polarization mode selective semiconductor laser, light...
Patent number
5,901,166
Issue date
May 4, 1999
Canon Kabushiki Kaisha
Jun Nitta
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Variable wavelength light source using a laser, wavelength control...
Patent number
5,862,165
Issue date
Jan 19, 1999
Canon Kabushiki Kaisha
Yuichi Handa
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Demultiplexing apparatus and optical communication system using the...
Patent number
5,379,142
Issue date
Jan 3, 1995
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Optical device with an optical coupler for effecting light branchin...
Patent number
5,369,719
Issue date
Nov 29, 1994
Canon Kabushiki Kaisha
Seiji Mishima
G02 - OPTICS
Information
Patent Grant
Method and apparatus for light amplification exhibiting a flat gain...
Patent number
5,239,410
Issue date
Aug 24, 1993
Canon Kabushiki Kaisha
Michiyo Nishimura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical device with an optical coupler for effecting light branchin...
Patent number
5,239,600
Issue date
Aug 24, 1993
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Laser light source for generating beam collimated in at least one d...
Patent number
4,935,930
Issue date
Jun 19, 1990
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Integrated optical head
Patent number
4,887,255
Issue date
Dec 12, 1989
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Optical operation apparatus for effecting parallel signal processin...
Patent number
4,815,027
Issue date
Mar 21, 1989
Canon Kabushiki Kaisha
Jun Tokumitsu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Element having light waveguides and method of making same
Patent number
4,793,675
Issue date
Dec 27, 1988
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Integrated optical device
Patent number
4,776,661
Issue date
Oct 11, 1988
Canon Kabushiki Kaisha
Yuichi Handa
G02 - OPTICS
Information
Patent Grant
Integrated optical circuit element and method of making the same
Patent number
4,707,059
Issue date
Nov 17, 1987
Canon Kabushiki Kaisha
Shigetaro Ogura
G02 - OPTICS