G04B 13/00
Gearwork
Official title: Gearwork {(gearwork for driving the hands G04B19/02; calibers G04B33/00; dispositions and components for transmission in general F16H)}
G04B13/00 (Gearwork) appears on 392 US grants and 425 published applications in this corpus.
Search patents in G04B- Granted patents
- 392
- Published applications
- 425
- Assignees
- 92
- Inventors
- 538
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 1 |
| 2004 | 4 | 2 |
| 2005 | 1 | 3 |
| 2006 | 0 | 4 |
| 2007 | 5 | 4 |
| 2008 | 2 | 10 |
| 2009 | 5 | 6 |
| 2010 | 4 | 13 |
| 2011 | 7 | 11 |
| 2012 | 5 | 14 |
| 2013 | 10 | 14 |
| 2014 | 15 | 16 |
| 2015 | 14 | 18 |
| 2016 | 27 | 28 |
| 2017 | 21 | 33 |
| 2018 | 19 | 26 |
| 2019 | 19 | 29 |
| 2020 | 17 | 31 |
| 2021 | 19 | 46 |
| 2022 | 25 | 27 |
| 2023 | 36 | 26 |
| 2024 | 37 | 21 |
| 2025 | 22 | 20 |
| 2026 | 19 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G04B 13/02Wheels314
- G04B 13/007Gearwork: with differential work28
- G04B 13/002Where rotation in one direction is changed into a stepping movement22
- G04B 13/001Gearwork: with the choice of adjustable or varying transmission ratio13
- G04B 13/005Where a revolution in both directions is changed into a revolution in8
Recent patents
- Timepiece mechanism provided with a magnetic gear15 Sep 2026US 12,736,917 B2The Swatch Group Research and Development Ltd
- Transmission mechanism for an automatic winding chain18 Aug 2026US 12,710,724 B2Rolex SA
- Timepiece including a display member for displaying a local time HT and a display member for displaying a GMT time18 Aug 2026US 12,710,727 B2Manufacture D'Horlogerie Audemars Piguet SA
- Winding device, in particular for a horological barrel, provided with a disconnectable winding gear train11 Aug 2026US 12,704,811 B2Nivarox-FAR S. A.
- Winding device, in particular for a clock barrel, provided with disconnection means23 Jun 2026US 12,663,756 B2Nivarox-FAR S. A.
- Zero-free mod time tracking system8 Oct 2026US 2026/0310136 A1
- Zero-free mod time tracking system8 Oct 2026US 2026/0310137 A1
- Timepiece move part and timepiece24 Sep 2026US 2026/0288064 A1Seiko Watch Kabushiki Kaisha (Trading AS Seiko Watch Corporation)
- Gear set, movement, and timepiece17 Sep 2026US 2026/0277158 A1Seiko Epson Corporation
- Horology movement fitted with a bidirectional drive mechanism for a jumping indicator17 Sep 2026US 2026/0277161 A1ETA SA Manufacture Horlogere Suisse
Most cited
By later US patents
- Reduction gear of electronic wristwatch with stepping motor and sweep second hand82US 4,378,957 A1983
- Micro-mechanical part with a shaped aperture for assembly on a shaft26US 8,206,029 B2Nivarox-FAR S. A. · 2012
- Astronomical wrist-watch24US 4,711,583 AUlysse Nardin S.A. · 1987
- Gear train22US 4,200,000 ASociete Suisse pour l'Industrie Horlogere Management Services S.A. · 1980
- Clock movement20US 4,465,378 AGebruder Junghans GmbH · 1984