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Eiichi Nagasaka
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Nagano-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Timepiece part and timepiece
Patent number
11,829,108
Issue date
Nov 28, 2023
Seiko Epson Corporation
Eiichi Nagasaka
G04 - HOROLOGY
Information
Patent Grant
Timepiece part and timepiece
Patent number
11,409,244
Issue date
Aug 9, 2022
Seiko Epson Corporation
Eiichi Nagasaka
G04 - HOROLOGY
Information
Patent Grant
Mechanical component and timepiece
Patent number
10,747,178
Issue date
Aug 18, 2020
Seiko Epson Corporation
Munehiro Shibuya
G04 - HOROLOGY
Information
Patent Grant
Timepiece
Patent number
7,832,924
Issue date
Nov 16, 2010
Seiko Epson Corporation
Eiichi Nagasaka
G04 - HOROLOGY
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
Multifunctional watch
Patent number
7,170,826
Issue date
Jan 30, 2007
Seiko Epson Corporation
Tsuneaki Furukawa
G04 - HOROLOGY
Information
Patent Grant
Starter for electricmagnetic converter, and timepiece
Patent number
7,031,230
Issue date
Apr 18, 2006
Seiko Epson Corporation
Eiichi Nagasaka
G04 - HOROLOGY
Information
Patent Grant
Electronic timepiece
Patent number
6,603,236
Issue date
Aug 5, 2003
Seiko Epson Corporation
Eiichi Nagasaka
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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
Piezoelectric power generator for a portable power supply unit and...
Patent number
5,751,091
Issue date
May 12, 1998
Seiko Epson Corporation
Osamu Takahashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Method Of Manufacturing Wheel For Timepiece, Plate-Shaped Member, W...
Publication number
20240427289
Publication date
Dec 26, 2024
SEIKO EPSON CORPORATION
Takeo FUNAKAWA
G04 - HOROLOGY
Information
Patent Application
Electronically Controlled Mechanical Timepiece
Publication number
20230024159
Publication date
Jan 26, 2023
SEIKO EPSON CORPORATION
Eiichi HIRAYA
G04 - HOROLOGY
Information
Patent Application
Timepiece Part and Timepiece
Publication number
20220299941
Publication date
Sep 22, 2022
SEIKO EPSON CORPORATION
Eiichi NAGASAKA
G04 - HOROLOGY
Information
Patent Application
TIMEPIECE PART AND TIMEPIECE
Publication number
20200133200
Publication date
Apr 30, 2020
SEIKO EPSON CORPORATION
Eiichi NAGASAKA
G04 - HOROLOGY
Information
Patent Application
MECHANICAL COMPONENT AND TIMEPIECE
Publication number
20180314208
Publication date
Nov 1, 2018
SEIKO EPSON CORPORATION
Munehiro SHIBUYA
G04 - HOROLOGY
Information
Patent Application
TIMEPIECE
Publication number
20080239883
Publication date
Oct 2, 2008
SEIKO EPSON CORPORATION
Eiichi NAGASAKA
G04 - HOROLOGY
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
Multifunctional watch
Publication number
20070086276
Publication date
Apr 19, 2007
SEIKO EPSON CORPORATION
Tsuneaki Furukawa
G04 - HOROLOGY
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
Multifunctional watch
Publication number
20040264304
Publication date
Dec 30, 2004
SEIKO EPSON CORPORATION
Tsuneaki Furukawa
G04 - HOROLOGY