G05D 27/02
Simultaneous control of variables covered by two or more of main groups
Official title: characterised by the use of electric means
G05D27/02 (Simultaneous control of variables covered by two or more of main groups) appears on 252 US grants and 203 published applications in this corpus.
Search patents in G05D- Granted patents
- 252
- Published applications
- 203
- Assignees
- 189
- Inventors
- 579
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 13 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 3 |
| 2002 | 11 | 8 |
| 2003 | 8 | 7 |
| 2004 | 6 | 9 |
| 2005 | 11 | 3 |
| 2006 | 0 | 5 |
| 2007 | 1 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 11 |
| 2011 | 2 | 4 |
| 2012 | 2 | 6 |
| 2013 | 4 | 8 |
| 2014 | 6 | 18 |
| 2015 | 9 | 9 |
| 2016 | 7 | 14 |
| 2017 | 15 | 6 |
| 2018 | 14 | 12 |
| 2019 | 8 | 12 |
| 2020 | 11 | 9 |
| 2021 | 7 | 12 |
| 2022 | 9 | 10 |
| 2023 | 10 | 10 |
| 2024 | 10 | 4 |
| 2025 | 7 | 11 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Enhanced HVAC performance monitoring system and method thereof18 Aug 2026US 12,710,188 B2
- Environmental test equipment for cooperative control of salt spray concentration and relative humidity12 May 2026US 12,625,060 B2China National Electric Apparatus Research Institute Co., Ltd.
- Temperature and relative humidity controller9 Dec 2025US 12,492,839 B2Nelumbo Inc.
- Sweating simulator4 Nov 2025US 12,462,710 B2The Hong Kong Polytechnic University
- System and method for measuring rapid decompression ice nucleation in lyophilization28 Oct 2025US 12,455,115 B2Purdue Research Foundation
- Method, device, and system for real-time virus infection risk monitoring27 Aug 2026US 2026/0253745 A1
- Field equipment framework19 Mar 2026US 2026/0079511 A1Schlumberger Technology Corporation
- Moveable body control device and storage medium11 Sep 2025US 2025/0284299 A1GE Precision Healthcare LLC
- Gas control system and method for a reflow soldering furnace28 Aug 2025US 2025/0269452 A1Illinois Tool Works Inc.
- Flow ratio controllers and gas distribution systems utilizing flow ratio controllers21 Aug 2025US 2025/0264891 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Pressure flow and concentration control of oxygen/ozone gas mixtures450US 5,904,170 AAPPLIED Materials.Inc. · 1999
- Fluid and gas supply system317US 6,286,764 B12001
- Temperature and humidity auctioneering control185US 4,889,280 AGas Research Institute · 1989
- Thermostat incorporating a carbon dioxide sensor suitable for reading using potentiostat techniques, and environmental control system incorporating such thermostat147US 6,578,770 B12003
- Control for air quality machine145US 5,428,964 ATec-Way Air Quality Products, Inc. · 1995