G04B 19/2536
Automatically corrected at the end of months having less than 31 days
Official title: {automatically corrected at the end of months having less than 31 days}
G04B19/2536 (Automatically corrected at the end of months having less than 31 days) appears on 57 US grants and 51 published applications in this corpus.
Search patents in G04B- Granted patents
- 57
- Published applications
- 51
- Assignees
- 29
- Inventors
- 62
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 0 |
| 2005 | 2 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 3 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 4 |
| 2013 | 1 | 1 |
| 2014 | 4 | 1 |
| 2015 | 1 | 0 |
| 2016 | 4 | 6 |
| 2017 | 2 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 4 |
| 2023 | 2 | 5 |
| 2024 | 4 | 2 |
| 2025 | 3 | 0 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Timepiece calendar system11 Aug 2026US 12,704,813 B2Rolex SA
- Movement transmission system11 Aug 2026US 12,704,814 B2Rolex SA
- Lunisolar calendar display mechanism for a clockwork movement, corresponding clockwork movement and corresponding timepiece16 Jun 2026US 12,656,737 B2Nogerah SA
- Timepiece comprising a calendar mechanism and a mechanism for correcting the date or month19 May 2026US 12,632,009 B2Manufacture D'Horlogerie Audemars Piguet SA
- Timepiece calendar system12 May 2026US 12,625,470 B2Rolex SA
- Perpetual calendar mechanism with concentric cams16 Jul 2026US 2026/0202798 A1Manufacture D'Horlogerie Audemars Piguet SA
- Lunisolar calendar display mechanism for a clockwork movement, corresponding clockwork movement and corresponding timepiece14 Nov 2024US 2024/0377789 A1Nogerah SA
- Timepiece comprising a calendar mechanism and a mechanism for correcting the date or month3 Oct 2024US 2024/0329602 A1Manufacture D'Horlogerie Audemars Piguet SA
- Islamic hijiri calendar24 Aug 2023US 2023/0266714 A1Parmigiani Fleurier SA
- Head-to-tail flexible guide assembly for a horological movement, in particular for a display device22 Jun 2023US 2023/0195034 A1Montres Breguet S. A.
Most cited
By later US patents
- Watch29US 4,674,889 AIWC International Watch Co. AG · 1987
- Annual calendar mechanism for a timepiece26US 5,432,759 ACompagnie des Montres Longines, Francillon S.A. · 1995
- Annual calendar mechanism for clockwork movement22US 6,108,278 AFrederic Piguet S.A. · 2000
- Annual calendar mechanism for a timepiece20US 5,699,321 ACompagnie des Montres Longines, Francillon S.A. · 1997
- Annual date mechanism for clock movement16US 6,744,696 B2Rolex SA · 2004