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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Emergency lamp and wireless emergency lamp data transmission system
Patent number
7,929,867
Issue date
Apr 19, 2011
Nakagawa Laboratories, Inc.
Masao Nakagawa
F21 - LIGHTING
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Patent Grant
Illuminative light communication device
Patent number
7,583,901
Issue date
Sep 1, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
F21 - LIGHTING
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Patents Applications
last 30 patents
Information
Patent Application
Illuminative light communication system
Publication number
20090310976
Publication date
Dec 17, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Illuminative light communication device and lighting device
Publication number
20090297167
Publication date
Dec 3, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Emergency lamp and wireless emergency lamp data transmission system
Publication number
20090297157
Publication date
Dec 3, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Illuminative light communication device
Publication number
20090297166
Publication date
Dec 3, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Illuminative light communication system, lighting device and illumi...
Publication number
20090297156
Publication date
Dec 3, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Data Transmission Apparatus and Data Reception Apparatus
Publication number
20090214225
Publication date
Aug 27, 2009
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Power Supply For Semiconductor Light Emitting Device And Illuminati...
Publication number
20080258641
Publication date
Oct 23, 2008
Nakagawa Laboratories, Inc.
Masao Nakagawa
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Communications System and Leaky Optical Fiber
Publication number
20070274727
Publication date
Nov 29, 2007
Nakagawa Laboratories, Inc.
Shinichiro Haruyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Position Data Communication Device
Publication number
20070275750
Publication date
Nov 29, 2007
Nakagawa Laboratories, Inc.
Masao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Camera-Equipped Cellular Terminal for Visible Light Communication
Publication number
20070254694
Publication date
Nov 1, 2007
Nakagawa Laboratories, Inc.
Masao Nakagwa
G06 - COMPUTING CALCULATING COUNTING