G04B 45/04
Time pieces with invisible drive
Official title: Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc {(for advertising G09F23/00; disc-shaped hands with marks or notches G04B19/046)}
G04B45/04 (Time pieces with invisible drive) appears on 23 US grants and 13 published applications in this corpus.
Search patents in G04B- Granted patents
- 23
- Published applications
- 13
- Assignees
- 14
- Inventors
- 51
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 2 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Portable device comprising decorative elements driven by invisible driving means, in a liquid29 Jul 2025US 12,372,925 B2Preciflex SA
- Mystery-drive mechanical or electromechanical timepiece27 Sep 2022US 11,454,935 B2The Swatch Group Research and Development Ltd
- Method of producing a decorated element for a timepiece or piece of jewellery, and element made by the method15 Sep 2020US 10,773,476 B2Omega SA
- Moon phase indicator mechanism30 Jul 2019US 10,365,611 B2Blancpain SA
- Watch-type wearable device5 Mar 2019US 10,222,750 B2Samsung Electronics Co., Ltd.
- Timepiece with analog and electronics displays2 Jul 2026US 2026/0186447 A1
- Ball dial8 Dec 2022US 2022/0390899 A1The Swatch Group Research and Development Ltd
- Two-Stage Speed Increaser Arrangement And Gear Train For A Clockwork26 May 2022US 2022/0163924 A1Maform Kft.
- Portable device comprising decorative elements driven by invisible driving means, in a liquid23 Dec 2021US 2021/0397131 A1Preciflex SA
- Mystery-drive mechanical or electromechanical timepiece5 Mar 2020US 2020/0073330 A1The Swatch Group Research and Development Ltd
Most cited
By later US patents