G04F 13/00
Apparatus for measuring unknown time intervals by means not provided for in
Official title: Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00
G04F13/00 (Apparatus for measuring unknown time intervals by means not provided for in) appears on 190 US grants and 155 published applications in this corpus.
Search patents in G04F- Granted patents
- 190
- Published applications
- 155
- Assignees
- 134
- Inventors
- 410
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 3 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 3 |
| 2007 | 5 | 6 |
| 2008 | 3 | 7 |
| 2009 | 5 | 5 |
| 2010 | 5 | 2 |
| 2011 | 5 | 2 |
| 2012 | 1 | 4 |
| 2013 | 3 | 10 |
| 2014 | 3 | 12 |
| 2015 | 8 | 10 |
| 2016 | 14 | 12 |
| 2017 | 11 | 11 |
| 2018 | 7 | 9 |
| 2019 | 6 | 7 |
| 2020 | 6 | 6 |
| 2021 | 7 | 18 |
| 2022 | 9 | 5 |
| 2023 | 5 | 3 |
| 2024 | 3 | 8 |
| 2025 | 1 | 3 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Highly charged nickel ion optical clock and its implementation21 Jul 2026US 12,687,820 B2Innovation Academy for Precision Measurement Science and Technology, Cas
- Phase stable signal generator and signal distribution system24 Mar 2026US 12,587,281 B2ORCA Computing Limited
- Imaging method and apparatus3 Feb 2026US 12,539,023 B2The University Court of the University of Edinburgh
- Astrophysical timing derived from photometric relative phase measurements of periodic stellar variability6 Jan 2026US 12,517,468 B2The United States of America as represented by the Secretary of the Navy
- Single use disposable elapsed time indicator with absorbable material7 Oct 2025US 12,436,503 B2CareFusion 303, Inc.
- Oxygen-responsive expiration date indicator16 Jul 2026US 2026/0202800 A1
- Highly charged nickel ion optical clock and its implementation28 May 2026US 2026/0147318 A1Innovation Academy for Precision Measurement Science and Technology, Cas
- Fluid-based game timer system30 Oct 2025US 2025/0334930 A1
- A method and a system for measuring the time of a moving object using a mobile device having a camera incorporated therein and a time measurement device31 Jul 2025US 2025/0246028 A1Mt Sport Ehf.
- Estimating time outdoors and in daylight based on ambient light, motion and location sensing27 Mar 2025US 2025/0103011 A1Apple Inc.
Most cited
By later US patents
- Time indicator187US 5,058,088 A1991
- Event recording system with digital line camera146US 5,657,077 A1997
- Patterned indicators105US 5,719,828 ATemtec, Inc. · 1998
- Time color indicator102US 4,212,153 AHerculite Protective Fabrics Corporation · 1980
- Microstructured time dependent indicators75US 6,741,523 B13M Innovative Properties Company · 2004