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Toshio Umemoto
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Koganei, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Time information management system
Patent number
6,298,014
Issue date
Oct 2, 2001
Citizen Watch Co., Ltd.
Hiroyuki Kihara
G04 - HOROLOGY
Information
Patent Grant
Watch containing light transmitting metallic dial
Patent number
5,966,344
Issue date
Oct 12, 1999
Citizen Watch Co., Ltd.
Toshio Umemoto
G04 - HOROLOGY
Information
Patent Grant
Watch with light transmitting type display plate
Patent number
5,703,837
Issue date
Dec 30, 1997
Citizen Watch Co., Ltd.
Toshio Umemoto
G04 - HOROLOGY
Information
Patent Grant
Electronic watch with an antenna for a receiving device
Patent number
5,331,608
Issue date
Jul 19, 1994
Citizen Watch Co., Ltd.
Toshio Umemoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Device for measuring altitude and barometric pressure
Patent number
5,224,059
Issue date
Jun 29, 1993
Citizen Watch Co., Ltd.
Tatsuo Nitta
G01 - MEASURING TESTING
Information
Patent Grant
Wristwatch with pressure sensor
Patent number
4,783,772
Issue date
Nov 8, 1988
Citizen Watch Co., Ltd.
Toshio Umemoto
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information
Patent Grant
Battery assembly for electronic timepieces
Patent number
4,251,604
Issue date
Feb 17, 1981
Citizen Watch Co., Ltd.
Toshio Umemoto
H01 - BASIC ELECTRIC ELEMENTS
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