G05D 3/14
Using an analogue comparing device
Official title: using an analogue comparing device
G05D3/14 (Using an analogue comparing device) appears on 258 US grants and 18 published applications in this corpus.
Search patents in G05D- Granted patents
- 258
- Published applications
- 18
- Assignees
- 172
- Inventors
- 428
- Latest grant
- 28 Feb 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 26 | 0 |
| 1978 | 20 | 0 |
| 1979 | 9 | 0 |
| 1980 | 13 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 11 | 0 |
| 1984 | 16 | 0 |
| 1985 | 19 | 0 |
| 1986 | 14 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 3 |
| 2018 | 3 | 3 |
| 2019 | 5 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G05D 3/1445With a plurality of loops70
- G05D 3/18Delivering a series of pulses54
- G05D 3/1472With potentiometer36
- G05D 3/16Whose output amplitude can only take a number of discrete values14
- G05D 3/1481With discrete position sensor11
- G05D 3/1409With dc amplifier chain8
- G05D 3/1427With non-linear amplifier chain6
- G05D 3/1418With ac amplifier chain5
All 10 subgroupsShow fewer
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Most cited
By later US patents
- Electrically controlled pressure relief valve including a hydraulic bias101US 4,548,233 AMannesmann Rexroth GmbH · 1985
- Adaptive control technique for a dynamic system78US 4,697,127 AInternational Business Machines Corporation · 1987
- Automatic control system and valve actuator73US 4,463,291 AAndale Company · 1984
- Stabilization system for soft-mounted platform58US 4,498,038 A1985
- Feedback system for a linear actuator56US 4,442,390 A1984