G04C 11/08
Synchronisation of independently-driven clocks: using an electro-magnet or-motor for oscillation correction
Official title: using an electro-magnet or-motor {for oscillation correction}
G04C11/08 (Synchronisation of independently-driven clocks: using an electro-magnet or-motor for oscillation correction) appears on 22 US grants and 16 published applications in this corpus.
Search patents in G04C- Granted patents
- 22
- Published applications
- 16
- Assignees
- 9
- Inventors
- 32
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 3 |
| 2021 | 0 | 2 |
| 2022 | 2 | 2 |
| 2023 | 4 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Timepiece assembly comprising a watch and a system for correcting the time6 May 2025US 12,292,715 B2The Swatch Group Research and Development Ltd
- Timepiece incorporating an actuator comprising an electromechanical device18 Jun 2024US 12,013,668 B2The Swatch Group Research and Development Ltd
- Electronic watch5 Mar 2024US 11,921,465 B2Seiko Epson Corporation
- Horological movement provided with a generator and a circuit for regulating the frequency of rotation of this generator14 Nov 2023US 11,815,857 B2The Swatch Group Research and Development Ltd
- Timepiece comprising a mechanical oscillator wherein the medium frequency is synchronised on that of a reference electronic oscillator27 Jun 2023US 11,687,041 B2The Swatch Group Research and Development Ltd
- Mechanical timepiece5 Jun 2025US 2025/0181035 A1Citizen Watch Co., Ltd.
- Mechanical Watch15 Aug 2024US 2024/0272588 A1Seiko Epson Corporation
- Timepiece assembly comprising a watch and a system for correcting the time4 May 2023US 2023/0132978 A1The Swatch Group Research and Development Ltd
- Timepiece provided with a mechanical movement and a device for correcting a displayed time12 Jan 2023US 2023/0009341 A1The Swatch Group Research and Development Ltd
- Timepiece incorporating an actuator comprising an electromechanical device29 Sep 2022US 2022/0308527 A1The Swatch Group Research and Development Ltd
Most cited
By later US patents
- Watch movement driven by a spring and regulated by an electronic circuit32US 3,937,001 A1976
- Timepiece having a mechanical movement associated with an electronic regulator15US 7,306,364 B2Asulab S. A. · 2007
- Electronic timepiece14US 3,948,036 ACitizen Watch Co., Ltd. · 1976
- Compensator for a mechanical pendulum clock12US 5,268,881 A1993
- Method and apparatus for synchronizing andoscillating system which is driven by an energy storage device10US 3,952,497 A1976