G04F 8/00
Apparatus for measuring unknown time intervals by electromechanical means
G04F8/00 (Apparatus for measuring unknown time intervals by electromechanical means) appears on 211 US grants and 140 published applications in this corpus.
Search patents in G04F- Granted patents
- 211
- Published applications
- 140
- Assignees
- 82
- Inventors
- 294
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 3 |
| 2003 | 3 | 6 |
| 2004 | 3 | 9 |
| 2005 | 7 | 8 |
| 2006 | 9 | 9 |
| 2007 | 6 | 9 |
| 2008 | 7 | 4 |
| 2009 | 6 | 5 |
| 2010 | 4 | 4 |
| 2011 | 7 | 21 |
| 2012 | 11 | 10 |
| 2013 | 11 | 3 |
| 2014 | 5 | 3 |
| 2015 | 3 | 11 |
| 2016 | 9 | 6 |
| 2017 | 3 | 3 |
| 2018 | 1 | 6 |
| 2019 | 4 | 5 |
| 2020 | 7 | 4 |
| 2021 | 3 | 1 |
| 2022 | 0 | 4 |
| 2023 | 2 | 1 |
| 2024 | 8 | 0 |
| 2025 | 1 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G04F 8/08Means used apart from the time-piece for starting or stopping same133
- G04F 8/006Running only during the time interval to be measured35
- G04F 8/003Apparatus for measuring unknown time intervals by electromechanical means: using continuously running12
- G04F 8/02Apparatus for measuring unknown time intervals by electromechanical means: using an electromechanical8
Recent patents
- Timer22 Jul 2025US 12,366,832 B1Shenzhen Weike Brand Management Ltd.
- Wireless programmable digital chess clock31 Dec 2024US 12,183,124 B2ZmartFun Electronics, Inc.
- Watch comprising an auxiliary function allowing the indication of seconds3 Dec 2024US 12,158,731 B2ETA SA Manufacture Horlogere Suisse
- Apparatus and method for controlling vehicle12 Nov 2024US 12,139,014 B2Hyundai Motor Company
- Method for controlling electronic watch and electronic watch2 Jul 2024US 12,025,957 B2Seiko Epson Corporation
- Racing tachymeter18 Sep 2025US 2025/0291319 A1Brooklands Watch Co.
- Racetrack timing method, system and apparatus, storage medium, and vehicle4 Sep 2025US 2025/0278958 A1Wuhan Lotus Cars Co., Ltd.
- Electronic timepiece, indication control method, and storage medium6 Mar 2025US 2025/0076822 A1Casio Computer Co., Ltd.
- Wireless programmable digital chess clock20 Jul 2023US 2023/0230420 A1ZmartFun Electronics, Inc.
- Watch comprising an auxiliary function allowing the indication of seconds15 Dec 2022US 2022/0397867 A1ETA SA Manufacture Horlogere Suisse
Most cited
By later US patents
- Sport monitoring system for determining airtime, speed, power absorbed and other factors such as drop distance559US 6,539,336 B1PhatRat Technologies, Inc. · 2003
- Shoes and garments employing one or more of accelerometers, wireless transmitters, processors, altimeters, to determine information such as speed to persons wearing the shoes or garments359US 7,457,724 B2NIKE, Inc. · 2008
- Systems and methods for determining performance data346US 7,092,846 B2PhatRat Technology, Inc. · 2006
- System and methods for determining performance data298US 6,959,259 B2PhatRat Technology, Inc. · 2005
- Systems for assessing athletic performance293US 7,072,789 B2PhatRat Technology, Inc. · 2006