Tomoyasu Yamada

Person

Niiza, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Switching power source device
- Patent number 7,639,516
- Issue date Dec 29, 2009
- Sanken Electric Co., Ltd.
- Hiroshi Usui
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter
- Patent number 7,542,308
- Issue date Jun 2, 2009
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
AC signal level detection circuit
- Patent number 7,271,579
- Issue date Sep 18, 2007
- Sanken Electric Co., Ltd.
- Masaaki Shimada
- G01 - MEASURING TESTING
Information Patent Grant
Switching power supply device and method for controlling switching...
- Patent number 7,272,018
- Issue date Sep 18, 2007
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching dc power supply
- Patent number 7,064,966
- Issue date Jun 20, 2006
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Circuit for starting power source apparatus
- Patent number 6,980,446
- Issue date Dec 27, 2005
- Sanken Electric Co., Ltd.
- Masaaki Simada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dc-to-dc converter
- Patent number 6,972,970
- Issue date Dec 6, 2005
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply device
- Patent number 6,882,551
- Issue date Apr 19, 2005
- Sanken Electric Co., Ltd.
- Masaaki Shimada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dc-to-dc converter with flyback period detector circuit
- Patent number 6,842,350
- Issue date Jan 11, 2005
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply, and a method of driving the same
- Patent number 6,842,353
- Issue date Jan 11, 2005
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power factor corrected SMPS with light and heavy load control modes
- Patent number 6,714,425
- Issue date Mar 30, 2004
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dc-dc converter
- Patent number 6,445,598
- Issue date Sep 3, 2002
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switch-mode DC power supply, monolithic IC and hybrid IC for the same
- Patent number 6,134,123
- Issue date Oct 17, 2000
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply for computer-driven displays or the like
- Patent number 5,793,621
- Issue date Aug 11, 1998
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Magnetic tape recording/playback apparatus for automatically detect...
- Patent number 5,469,307
- Issue date Nov 21, 1995
- Pioneer Electronic Corporation
- Tomoyasu Yamada
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital reconstructing of harmonics to extend band of frequency res...
- Patent number 5,267,095
- Issue date Nov 30, 1993
- Pioneer Electronic Corporation
- Tsunao Hasegawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for recording/reproducing and searching digital signals usin...
- Patent number 5,003,411
- Issue date Mar 26, 1991
- Pioneer Electronic Corporation
- Shinichi Nagahara
- G02 - OPTICS
Information Patent Grant
Music start signals in a magnetic recording/reproducing device
- Patent number 4,992,892
- Issue date Feb 12, 1991
- Pioneer Electronic Corporation
- Tomoyasu Yamada
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape recorder which displays unrecorded time on magnetic tapes
- Patent number 4,991,040
- Issue date Feb 5, 1991
- Pioneer Electronic Corporation
- Nobutoshi Fukuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for recording and reproducing digital signals using a hel...
- Patent number 4,930,031
- Issue date May 29, 1990
- Pioneer Electronic Corporation
- Shinichi Nagahara
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotary head digital audio recording/reproducing apparatus
- Patent number 4,864,436
- Issue date Sep 5, 1989
- Pioneer Electronic Corporation
- Yutaka Masumoto
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
DC-DC converter
- Publication number 20060221650
- Publication date Oct 5, 2006
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power source device
- Publication number 20060109692
- Publication date May 25, 2006
- Hiroshi Usui
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply device and method for controlling switching...
- Publication number 20060056210
- Publication date Mar 16, 2006
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Switching dc power supply
- Publication number 20050248965
- Publication date Nov 10, 2005
- Tomoyasu Yamada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Ac signal level detection circuit
- Publication number 20050151567
- Publication date Jul 14, 2005
- SANKEN ELECTRIC CO., LTD.
- Masaaki Shimada
- G01 - MEASURING TESTING
Information Patent Application
Dc-to-dc converter
- Publication number 20050146901
- Publication date Jul 7, 2005
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method for starting power source apparatus, circuit for starting po...
- Publication number 20050088862
- Publication date Apr 28, 2005
- Masaaki Simada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Switching power supply device
- Publication number 20050018458
- Publication date Jan 27, 2005
- Masaaki Shimada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Dc-to-dc converter
- Publication number 20040218405
- Publication date Nov 4, 2004
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply, and a method of driving the same
- Publication number 20040218410
- Publication date Nov 4, 2004
- Sanken Electric Co., Ltd.
- Tomoyasu Yamada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Switching power supply
- Publication number 20030099119
- Publication date May 29, 2003
- Tomoyasu Yamada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Tomoyasu Yamada

Person

Patents Grantslast 30 patents

Switching power source device

DC-DC converter

AC signal level detection circuit

Switching power supply device and method for controlling switching...

Switching dc power supply

Circuit for starting power source apparatus

Dc-to-dc converter

Switching power supply device

Dc-to-dc converter with flyback period detector circuit

Switching power supply, and a method of driving the same

Power factor corrected SMPS with light and heavy load control modes

Dc-dc converter

Switch-mode DC power supply, monolithic IC and hybrid IC for the same

Switching power supply for computer-driven displays or the like

Magnetic tape recording/playback apparatus for automatically detect...

Digital reconstructing of harmonics to extend band of frequency res...

Method for recording/reproducing and searching digital signals usin...

Music start signals in a magnetic recording/reproducing device

Tape recorder which displays unrecorded time on magnetic tapes

Apparatus for recording and reproducing digital signals using a hel...

Rotary head digital audio recording/reproducing apparatus

Patents Applicationslast 30 patents

DC-DC converter

Switching power source device

Switching power supply device and method for controlling switching...

Switching dc power supply

Ac signal level detection circuit

Dc-to-dc converter

Method for starting power source apparatus, circuit for starting po...

Switching power supply device

Dc-to-dc converter

Switching power supply, and a method of driving the same

Switching power supply