Singo Ichikawa

Person

Tanashi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for stabilizing measured values for display
- Patent number 4,780,841
- Issue date Oct 25, 1988
- Citizen Watch Co.
- Singo Ichikawa
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
DC-to-DC Voltage converter
- Patent number 4,451,743
- Issue date May 29, 1984
- Citizen Watch Company Limited
- Fuminori Suzuki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electronic timepiece
- Patent number 4,282,594
- Issue date Aug 4, 1981
- Citizen Watch Company Limited
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Electronic watch module structure
- Patent number 4,272,838
- Issue date Jun 9, 1981
- Citizen Watch Co., Ltd.
- Noriyuki Kasama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electronic timepiece
- Patent number 4,270,193
- Issue date May 26, 1981
- Citizen Watch Company Limited
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Electronic calculator watch
- Patent number 4,268,913
- Issue date May 19, 1981
- Citizen Watch Co., Ltd.
- Tadahiko Nakagiri
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Analog quartz timepiece
- Patent number 4,261,048
- Issue date Apr 7, 1981
- Citizen Watch Company Limited
- Jinro Motoki
- G04 - HOROLOGY
Information Patent Grant
Electronic wristwatch
- Patent number 4,236,237
- Issue date Nov 25, 1980
- Citizen Watch Company Limited
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Solid state watch module construction
- Patent number 4,232,512
- Issue date Nov 11, 1980
- Citizen Watch Co., Ltd.
- Kenichi Yoshikawa
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece
- Patent number 4,226,081
- Issue date Oct 7, 1980
- Citizen Watch Co., Ltd.
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece having a voltage conversion circuit
- Patent number 4,221,111
- Issue date Sep 9, 1980
- Citizen Watch Company Limited
- Mitsuo Onda
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece equipped with battery life display
- Patent number 4,219,999
- Issue date Sep 2, 1980
- Citizen Watch Company, Limited
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Function selection circuit for multi-function timepiece
- Patent number 4,216,649
- Issue date Aug 12, 1980
- Citizen Watch Company Limited
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Control circuit for electronic timepiece
- Patent number 4,178,750
- Issue date Dec 18, 1979
- Citizen Watch Company Limited
- Tomomi Murakami
- G04 - HOROLOGY
Information Patent Grant
Timepiece with display device for warning battery life
- Patent number 4,175,377
- Issue date Nov 27, 1979
- Citizen Watch Co. Ltd.
- Singo Ichikawa
- G04 - HOROLOGY
Information Patent Grant
Analog quartz timepiece
- Patent number 4,173,863
- Issue date Nov 13, 1979
- Citizen Watch Company Limited
- Jinro Motoki
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece
- Patent number 4,147,022
- Issue date Apr 3, 1979
- Citizen Watch Company Limited
- Singo Ichikawa
- G04 - HOROLOGY

Singo Ichikawa

Person

Patents Grantslast 30 patents

Method and apparatus for stabilizing measured values for display

DC-to-DC Voltage converter

Electronic timepiece

Electronic watch module structure

Electronic timepiece

Electronic calculator watch

Analog quartz timepiece

Electronic wristwatch

Solid state watch module construction

Electronic timepiece

Electronic timepiece having a voltage conversion circuit

Electronic timepiece equipped with battery life display

Function selection circuit for multi-function timepiece

Control circuit for electronic timepiece

Timepiece with display device for warning battery life

Analog quartz timepiece

Electronic timepiece