G04B 17/325
For fastening the hairspring in a fixed position
Official title: {for fastening the hairspring in a fixed position, e.g. using a block}
G04B17/325 (For fastening the hairspring in a fixed position) appears on 56 US grants and 79 published applications in this corpus.
Search patents in G04B- Granted patents
- 56
- Published applications
- 79
- Assignees
- 20
- Inventors
- 75
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 0 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 4 |
| 2013 | 0 | 3 |
| 2014 | 6 | 8 |
| 2015 | 10 | 7 |
| 2016 | 7 | 7 |
| 2017 | 6 | 8 |
| 2018 | 2 | 2 |
| 2019 | 7 | 3 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 2 | 6 |
| 2024 | 1 | 9 |
| 2025 | 2 | 13 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Part for attaching an outer last coil of a balance spring of a horological movement29 Sep 2026US 12,748,379 B2ETA SA Manufacture Horlogere Suisse
- Spiral spring for a horological resonator mechanism provided with means for adjusting the stiffness18 Aug 2026US 12,710,725 B2Omega SA
- Horological assembly comprising a balance spring and a stud12 May 2026US 12,625,468 B2ETA SA Manufacture Horlogere Suisse
- Balance spring of a sprung balance assembly of a mechanical horological movement27 Jan 2026US 12,535,770 B2ETA SA Manufacture Horlogere Suisse
- Regulator, movement, and watch30 Dec 2025US 12,510,864 B2Seiko Epson Corporation
- Horological assembly for a regulating member provided with rate adjustment means19 Jun 2025US 2025/0199474 A1The Swatch Group Research and Development Ltd
- Stud-holder for a horological regulating member provided with means for adjusting the rate and/or isochronism19 Jun 2025US 2025/0199477 A1The Swatch Group Research and Development Ltd
- Assembly of two timepiece components with improved assembly means12 Jun 2025US 2025/0189931 A1ETA SA Manufacture Horlogere Suisse
- Stud-holder for a horological regulating member comprising a stud fitted with an anti-jamming arm29 May 2025US 2025/0172910 A1ETA SA Manufacture Horlogere Suisse
- Timepiece regulating member comprising an actuation system provided with an eccentric22 May 2025US 2025/0164932 A1ETA SA Manufacture Horlogere Suisse
Most cited
By later US patents
- Regulator and balance bridge arrangement for a horological device6US 3,943,701 ATimex Corporation · 1976
- Balance spring, regulated balance wheel assembly and methods of manufacture thereof4US 8,333,501 B2Carbontime Limited · 2012
- Spiral spring3US 8,764,282 B2Manufacture et fabrique de montres et chronometres Ulysse Nardin Le Locle SA · 2014
- Assembly of a part that has no plastic domain3US 9,457,536 B2ETA SA Manufacture Horlogere Suisse · 2016
- Method for attachment of a balance spring for a mechanical timepiece movement and balance spring attached by such a method2US 10,018,965 B2ETA SA Manufacture Horlogere Suisse · 2018