G04D 7/004
Optical measuring and testing apparatus
Official title: {Optical measuring and testing apparatus}
G04D7/004 (Optical measuring and testing apparatus) appears on 30 US grants and 47 published applications in this corpus.
Search patents in G04D- Granted patents
- 30
- Published applications
- 47
- Assignees
- 16
- Inventors
- 78
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 5 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 0 | 3 |
| 2021 | 2 | 6 |
| 2022 | 2 | 6 |
| 2023 | 7 | 4 |
| 2024 | 5 | 6 |
| 2025 | 4 | 8 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic timepiece, hand position detection method and storage medium29 Sep 2026US 12,748,384 B2Casio Computer Co., Ltd.
- Device for measuring the humidity in the internal volume of a watch case10 Feb 2026US 12,546,716 B2The Swatch Group Research and Development Ltd
- Portable modular unit for inspecting in a timepiece the presence of a lubricating agent or of an epilame24 Jun 2025US 12,339,230 B2The Swatch Group Research and Development Ltd
- Device for determining the position of a horological display10 Jun 2025US 12,326,696 B2The Swatch Group Research and Development Ltd
- Timepiece assembly comprising a watch and a system for correcting the time6 May 2025US 12,292,715 B2The Swatch Group Research and Development Ltd
- Method for setting the time on a watch positioned on a support, implementing neural networks27 Aug 2026US 2026/0253388 A1Montres Breguet S. A.
- Method for the preparation of a timepiece stone for measuring roughness, and measurement method9 Jul 2026US 2026/0194862 A1Rolex SA
- Method for testing the kinematic display chain in a watch or watch head downstream of its oscillator11 Jun 2026US 2026/0161137 A1Omega SA
- Device for determining an acoustic event for a watch dial26 Jun 2025US 2025/0208580 A1ETA SA Manufacture Horlogere Suisse
- Watch comprising a device for detecting a defect in water-resistance26 Jun 2025US 2025/0208581 A1Et AS Amanufacture Horlogere Suisse
Most cited
By later US patents
- Multifunctional case7US 9,292,000 B2I.M.H. Innovations Manufacturers Horlogeres SA · 2016
- Method for adjusting the oscillation frequency and/or adjusting the inertia and/or balancing of a movable timepiece movement component or of a timepiece spring balance assembly4US 9,436,162 B2ETA SA Manufacture Horlogere Suisse · 2016
- Pendulum position detector2US 4,979,387 A1990
- Device for measuring the accuracy of a mechanical watch2US 9,383,725 B2The Swatch Group Research and Development Ltd · 2016
- Method of measuring at least one dimension of an object1US 10,175,036 B2Rolex SA · 2019