G04B 1/14
Mainsprings
Official title: Mainsprings; Bridles therefor (mainsprings with bridles G04B1/18; alloys C22C; springs in general F16F {; constructions for compensation of changes in the motive power of the mainspring G04B1/22; construction of the hairspring G04B17/066; arrangements facilitating the removal of the mainspring G04B33/14})
G04B1/14 (Mainsprings) appears on 61 US grants and 76 published applications in this corpus.
Search patents in G04B- Granted patents
- 61
- Published applications
- 76
- Assignees
- 26
- Inventors
- 122
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 10 |
| 2015 | 8 | 10 |
| 2016 | 10 | 5 |
| 2017 | 1 | 5 |
| 2018 | 5 | 4 |
| 2019 | 5 | 7 |
| 2020 | 2 | 9 |
| 2021 | 4 | 5 |
| 2022 | 4 | 1 |
| 2023 | 7 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Barrel for timepiece25 Nov 2025US 12,481,246 B2Nivarox-FAR S. A.
- Part for timepiece movement, timepiece movement, timepiece, and method for manufacturing such a part for timepiece movement8 Jul 2025US 12,353,168 B2LVMH Swiss Manufactures SA
- Flexible timepiece component and horological movement including such a component11 Jun 2024US 12,007,716 B2The Swatch Group Research and Development Ltd
- Spring for a notching system and timepiece notching system7 May 2024US 11,977,355 B2Rolex SA
- Method for producing a silicon-based timepiece spring24 Oct 2023US 11,796,966 B2Patek Philippe SA Geneve
- Power reserve indicator1 Oct 2026US 2026/0299517 A1Nivarox-FAR S. A.
- Timepiece movement and timepiece24 Sep 2026US 2026/0288063 A1Seiko Watch Kabushiki Kaisha (Trading AS Seiko Watch Corporation)
- Tool and method for the separation of balance springs after winding in and heat treatment6 Mar 2025US 2025/0076812 A1Nivarox-FAR S. A.
- Ni-nb-cu alloy metallic glasses13 Feb 2025US 2025/0051897 A1Vulkam
- Barrel for timepiece29 Jun 2023US 2023/0205135 A1Nivarox-FAR S. A.
Most cited
By later US patents
- Watch hairspring and method for making same28US 7,077,562 B2CSEM Centre Suisse d'Electronique et de Microtechnique SA · 2006
- Composite negator springs20US 4,464,216 AHercules Incorporated · 1984
- Spring, power spring, hair spring, driving mechanism utilizing them, and timepiece19US 6,843,594 B1Seiko Epson Corporation · 2005
- Spring, mainspring, hairspring, and driving mechanism and timepiece based thereon15US 6,863,435 B2Seiko Epson Corporation · 2005
- Downhole clock spring13US 4,664,531 AV. E. Kuster Company, Inc. · 1987