Tatsuo Hara

Person

Okaya-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing magnetic head
- Patent number 7,536,779
- Issue date May 26, 2009
- Seiko Epson Corporation
- Tatsuo Hara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Spring, mainspring, hairspring, and driving mechanism and timepiece...
- Patent number 6,863,435
- Issue date Mar 8, 2005
- Seiko Epson Corporation
- Masatoshi Moteki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Spring, power spring, hair spring, driving mechanism utilizing them...
- Patent number 6,843,594
- Issue date Jan 18, 2005
- Seiko Epson Corporation
- Masatoshi Moteki
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Mainspring device and a winding protection structure
- Patent number 6,439,762
- Issue date Aug 27, 2002
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Mainspring device, timepiece, and method of controlling the mainspr...
- Patent number 6,422,739
- Issue date Jul 23, 2002
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Timepiece
- Patent number 6,367,966
- Issue date Apr 9, 2002
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Control device for stepper motor, control method for the same, and...
- Patent number 6,339,306
- Issue date Jan 15, 2002
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Control device for stepper motor, control method for the same, and...
- Patent number 6,194,862
- Issue date Feb 27, 2001
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Electronic watch
- Patent number 6,183,125
- Issue date Feb 6, 2001
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Electronic watch
- Patent number 6,120,177
- Issue date Sep 19, 2000
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Stepping motor control device and method thereof and timepiece
- Patent number 6,108,279
- Issue date Aug 22, 2000
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Electronically controlled mechanical timepiece
- Patent number 6,097,675
- Issue date Aug 1, 2000
- Seiko Epson Corporation
- Osamu Takahashi
- G04 - HOROLOGY
Information Patent Grant
Electronic watch
- Patent number 6,012,838
- Issue date Jan 11, 2000
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Grant
Analog indicator type electronic timepiece and charging method thereof
- Patent number 5,581,519
- Issue date Dec 3, 1996
- Seiko Epson Corporation
- Tatsuo Hara
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF MANUFACTURING MAGNETIC CORE, MAGNETIC CORE, ELECTROMAGNET...
- Publication number 20080022511
- Publication date Jan 31, 2008
- SEIKO EPSON CORPORATION
- Tatsuo Hara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Timepiece and spring thereof
- Publication number 20070133355
- Publication date Jun 14, 2007
- Seik Epson Corporation
- Tatsuo Hara
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Method of manufacturing magnetic core, magnetic core, electromagnet...
- Publication number 20050152063
- Publication date Jul 14, 2005
- Seiko Epson Corporation
- Tatsuo Hara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Spring, drive mechanism, device and timepiece using the spring
- Publication number 20020191493
- Publication date Dec 19, 2002
- Tatsuo Hara
- G04 - HOROLOGY
Information Patent Application
Spring, mainspring, hairspring, and driving mechanism and timepiece...
- Publication number 20010030908
- Publication date Oct 18, 2001
- Masatoshi Moteki
- G04 - HOROLOGY
Information Patent Application
Mainspring device and a winding protection structure
- Publication number 20010005339
- Publication date Jun 28, 2001
- Tatsuo Hara
- G04 - HOROLOGY

Tatsuo Hara

Person

Patents Grantslast 30 patents

Method of manufacturing magnetic head

Spring, mainspring, hairspring, and driving mechanism and timepiece...

Spring, power spring, hair spring, driving mechanism utilizing them...

Mainspring device and a winding protection structure

Mainspring device, timepiece, and method of controlling the mainspr...

Timepiece

Control device for stepper motor, control method for the same, and...

Control device for stepper motor, control method for the same, and...

Electronic watch

Electronic watch

Stepping motor control device and method thereof and timepiece

Electronically controlled mechanical timepiece

Electronic watch

Analog indicator type electronic timepiece and charging method thereof

Patents Applicationslast 30 patents

METHOD OF MANUFACTURING MAGNETIC CORE, MAGNETIC CORE, ELECTROMAGNET...

Timepiece and spring thereof

Method of manufacturing magnetic core, magnetic core, electromagnet...

Spring, drive mechanism, device and timepiece using the spring

Spring, mainspring, hairspring, and driving mechanism and timepiece...

Mainspring device and a winding protection structure