Clocks driven by synchronous motors

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Patents Grantslast 30 patents

Information Patent Grant
Electronic watch, motor control circuit, and method for controlling...
- Patent number 11,899,405
- Issue date Feb 13, 2024
- Seiko Epson Corporation
- Tomoki Okuhata
- G04 - HOROLOGY
Information Patent Grant
Electronic timepiece and display control method of electronic timep...
- Patent number 10,101,708
- Issue date Oct 16, 2018
- Seiko Epson Corporation
- Osami Yamada
- G04 - HOROLOGY
Information Patent Grant
Demand target display device
- Patent number 9,638,730
- Issue date May 2, 2017
- NIHON TECHNO CO., LTD.
- Eiichi Umamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Device for administering timed orders for the remote control of ele...
- Patent number 5,521,445
- Issue date May 28, 1996
- Moulinex S.A.
- Joseph A. P. M. Letorey
- G05 - CONTROLLING REGULATING
Information Patent Grant
Synchronous motor with sinusodial torque variation in each phase
- Patent number 4,891,538
- Issue date Jan 2, 1990
- Portescap
- Claude Oudet
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Single-phase motor with a magnetized rotor
- Patent number 4,713,565
- Issue date Dec 15, 1987
- Michel Grosjean
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multiphase motor with facially magnetized rotor having N/2 pairs of...
- Patent number 4,680,494
- Issue date Jul 14, 1987
- Michel Grosjean
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multiphase motor with magnetized rotor having N pairs of poles with...
- Patent number 4,634,906
- Issue date Jan 6, 1987
- Michel Grosjean
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multiphase motor with magnetized rotor having N/2 pairs of poles at...
- Patent number 4,629,924
- Issue date Dec 16, 1986
- Michel Grosjean
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Synchronous motor device for timepiece
- Patent number 4,565,955
- Issue date Jan 21, 1986
- Rhythm Watch Co., Ltd.
- Susumu Kubota
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-pole rotor particularly for small and miniature electric gene...
- Patent number 4,513,216
- Issue date Apr 23, 1985
- Magnetfabrik Bonn GmbH, vorm. Gewerkschaft Windhorst
- Werner Muller
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling the rotational speed and phase...
- Patent number 4,418,307
- Issue date Nov 29, 1983
- Braun Aktiengesellschaft
- Harald Hoffmann
- G04 - HOROLOGY
Information Patent Grant
Recorder control apparatus and method
- Patent number 4,369,362
- Issue date Jan 18, 1983
- Karl M. Groetschel
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Motor for electronic watch
- Patent number 4,277,704
- Issue date Jul 7, 1981
- ETA A.G. Ebauches-Fabrik
- Urs Giger
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electro-magnetic motor for timepiece
- Patent number 4,262,223
- Issue date Apr 14, 1981
- Ebauches Electroniques S.A.
- Willy Cleusix
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Low power synchronous motor and line cord therefor
- Patent number 3,988,639
- Issue date Oct 26, 1976
- General Time Corporation
- Ralph H. Preiser
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Low power synchronous motor and line cord therefor
- Patent number 3,967,147
- Issue date Jun 29, 1976
- General Time Corporation
- Ralph H. Preiser
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3922588
- Patent number 3,922,588
- Issue date Nov 25, 1975
- G04 - HOROLOGY
Information Patent Grant
3898488
- Patent number 3,898,488
- Issue date Aug 5, 1975
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3873865
- Patent number 3,873,865
- Issue date Mar 25, 1975
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3871238
- Patent number 3,871,238
- Issue date Mar 18, 1975
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
3869627
- Patent number 3,869,627
- Issue date Mar 4, 1975
- G04 - HOROLOGY
Information Patent Grant
3866486
- Patent number 3,866,486
- Issue date Feb 18, 1975
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
3859548
- Patent number 3,859,548
- Issue date Jan 7, 1975
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3803433
- Patent number 3,803,433
- Issue date Apr 9, 1974
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3790834
- Patent number 3,790,834
- Issue date Feb 5, 1974
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3747320
- Patent number 3,747,320
- Issue date Jul 24, 1973
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3699282
- Patent number 3,699,282
- Issue date Oct 17, 1972
- G04 - HOROLOGY
Information Patent Grant
3676725
- Patent number 3,676,725
- Issue date Jul 11, 1972
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3673787
- Patent number 3,673,787
- Issue date Jul 4, 1972
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC WATCH, MOTOR CONTROL CIRCUIT, AND METHOD FOR CONTROLLING...
- Publication number 20200401086
- Publication date Dec 24, 2020
- SEIKO EPSON CORPORATION
- Tomoki OKUHATA
- G04 - HOROLOGY
Information Patent Application
Reversible Mystery Watch
- Publication number 20140347963
- Publication date Nov 27, 2014
- Ali El Alej
- G04 - HOROLOGY

Clocks driven by synchronous motors

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Patents Grantslast 30 patents

Electronic watch, motor control circuit, and method for controlling...

Electronic timepiece and display control method of electronic timep...

Demand target display device

Device for administering timed orders for the remote control of ele...

Synchronous motor with sinusodial torque variation in each phase

Single-phase motor with a magnetized rotor

Multiphase motor with facially magnetized rotor having N/2 pairs of...

Multiphase motor with magnetized rotor having N pairs of poles with...

Multiphase motor with magnetized rotor having N/2 pairs of poles at...

Synchronous motor device for timepiece

Multi-pole rotor particularly for small and miniature electric gene...

Method and apparatus for controlling the rotational speed and phase...

Recorder control apparatus and method

Motor for electronic watch

Electro-magnetic motor for timepiece

Low power synchronous motor and line cord therefor

Low power synchronous motor and line cord therefor

3922588

3898488

3873865

3871238

3869627

3866486

3859548

3803433

3790834

3747320

3699282

3676725

3673787

Patents Applicationslast 30 patents

ELECTRONIC WATCH, MOTOR CONTROL CIRCUIT, AND METHOD FOR CONTROLLING...

Reversible Mystery Watch