G04C 13/021
Primary-secondary systems using transmission of singular pulses for driving directly secondary clocks
Official title: {primary-secondary systems using transmission of singular pulses for driving directly secondary clocks step by step (G04C13/03 takes precedence)}
G04C13/021 (Primary-secondary systems using transmission of singular pulses for driving directly secondary clocks) appears on 13 US grants and 10 published applications in this corpus.
Search patents in G04C- Granted patents
- 13
- Published applications
- 10
- Assignees
- 6
- Inventors
- 14
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 3 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 3 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sympathetic timepiece assembly24 Mar 2026US 12,585,224 B2Montres Breguet S. A.
- Sympathetic timepiece assembly17 Feb 2026US 12,554,226 B2Montres Breguet S. A.
- Sympathetic timepiece assembly23 Sep 2025US 12,422,781 B2Montres Breguet S. A.
- Delay time detection circuit, stamping information generation device, and delay time detection method29 Oct 2024US 12,130,653 B2NEC Platforms, Ltd.
- Wireless inductive pointer clock19 Apr 2016US 9,319,829 B1
- Sympathetic timepiece assembly5 Oct 2023US 2023/0315023 A1Montres Breguet S. A.
- Sympathetic timepiece assembly14 Sep 2023US 2023/0288874 A1Montres Breguet S. A.
- Sympathetic timepiece assembly7 Sep 2023US 2023/0280697 A1Montres Breguet S. A.
- Delay time detection circuit, stamping information generation device, and delay time detection method23 Dec 2021US 2021/0397211 A1NEC Platforms, Ltd.
- Wireless inductive pointer clock5 May 2016US 2016/0127853 A1
Most cited
By later US patents
- Clock diagnostics56US 7,230,884 B2The Sapling Company, Inc. · 2007
- Remotely-synchronizable time display17US 5,251,191 ADiehl GmbH & Co. · 1993
- Two-wire electronic module for remote digital clocks16US 5,425,004 AIndustrial Electronic Service · 1995
- Autonomous radio timepiece7US 5,235,563 AJunghans Uhren GmbH · 1993
- Wireless inductive pointer clock1US 9,319,829 B12016