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Yutaka Ishihara
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Discharge lamp lighting apparatus and discharge lamp apparatus
Patent number
7,084,586
Issue date
Aug 1, 2006
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Discharge lamp lighting apparatus
Patent number
6,967,449
Issue date
Nov 22, 2005
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Switching power supply apparatus with over-temperature protection
Patent number
6,819,091
Issue date
Nov 16, 2004
TDK Corporation
Yutaka Ishihara
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Discharge lamp lighting apparatus and discharge lamp apparatus
Patent number
6,815,912
Issue date
Nov 9, 2004
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Discharge lamp lighting method and discharge lamp lighting apparatus
Patent number
6,590,348
Issue date
Jul 8, 2003
TDK Corporation
Toru Takahashi
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Charging apparatus
Patent number
5,883,494
Issue date
Mar 16, 1999
Mitsubishi Denki Kabushiki Kaisha
Atsushi Kobayashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Discharge lamp lighting apparatus and discharge lamp apparatus
Publication number
20050057194
Publication date
Mar 17, 2005
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Discharge lamp lighting apparatus
Publication number
20040189217
Publication date
Sep 30, 2004
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Portable telephone battery pack and portable telephone equipped wit...
Publication number
20030181226
Publication date
Sep 25, 2003
Kaoru Kawata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Discharge lamp lighting apparatus and discharge lamp apparatus
Publication number
20030062855
Publication date
Apr 3, 2003
TDK Corporation
Yutaka Ishihara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Switching power supply apparatus
Publication number
20030048097
Publication date
Mar 13, 2003
TDK Corporation
Yutaka Ishihara
G05 - CONTROLLING REGULATING
Information
Patent Application
Discharge lamp lighting method and discharge lamp lighting apparatus
Publication number
20020047643
Publication date
Apr 25, 2002
TDK Corporation
Toru Takahashi
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...