G04D 3/0041
For coil-springs
Official title: {for coil-springs (coil-springs in general B21F; springs for the driving mechanism G04D3/0007)}
G04D3/0041 (For coil-springs) appears on 17 US grants and 21 published applications in this corpus.
Search patents in G04D- Granted patents
- 17
- Published applications
- 21
- Assignees
- 8
- Inventors
- 31
- Latest grant
- 1 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 1 |
| 2013 | 1 | 0 |
| 2014 | 2 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 3 | 1 |
| 2020 | 0 | 2 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 2 |
By publication year.
Recent patents
- Balance-spring for horological movement and method for manufacturing same1 Oct 2024US 12,105,475 B2Nivarox-FAR S. A.
- Method for manufacturing a spiral spring21 Nov 2023US 11,822,289 B2Csem Centre Suisse D'Electronique Et De Microtechnique SA—Recherche Et DéVeloppement
- Method for manufacturing timepiece thermocompensated hairsprings of precise stiffness18 Jul 2023US 11,703,804 B2Patek Philippe SA Geneve
- Method for manufacturing a balance spring for a horological movement17 May 2022US 11,334,028 B2Nivarox-FAR S. A.
- Method for press-rolling a timepiece mainspring29 Oct 2019US 10,456,825 B2Nivarox-FAR S. A.
- Device for separating wound in balance springs after an expansion cycle, and method for manufacturing a balance spring comprising a separation step carried out by such a device19 Jun 2025US 2025/0199475 A1Nivarox-FAR S. A.
- Tool and method for the separation of balance springs after winding in and heat treatment6 Mar 2025US 2025/0076812 A1Nivarox-FAR S. A.
- Balance-spring for horological movement and method for manufacturing same1 Jul 2021US 2021/0200153 A1Nivarox-FAR S.A.
- Method for manufacturing timepiece thermocompensated hairsprings of precise stiffness7 Jan 2021US 2021/0003971 A1Patek Philippe SA Geneve
- Method for manufacturing a spiral spring3 Dec 2020US 2020/0379408 A1Csem Centre Suisse D'Electronique Et De Microtechnique SA—Recherche Et DéVeloppement
Most cited
By later US patents
- Breguet overcoil balance spring made of micro-machinable material8US 7,950,847 B2Montres Breguet S. A. · 2011
- Method of manufacturing a one-piece hairspring5US 8,296,953 B2Montres Breguet S. A. · 2012
- Breguet overcoil balance spring made of silicon-based material5US 8,425,110 B2Montres Breguet S. A. · 2013
- Breguet overcoil balance spring made of micro-machinable material4US 8,215,828 B2Montres Breguet S. A. · 2012
- Balance spring, regulated balance wheel assembly and methods of manufacture thereof4US 8,333,501 B2Carbontime Limited · 2012