F25J 2280/50
Advanced process control
Official title: Advanced process control, e.g. adaptive or multivariable control
F25J2280/50 (Advanced process control) appears on 26 US grants and 40 published applications in this corpus.
Search patents in F25J- Granted patents
- 26
- Published applications
- 40
- Assignees
- 21
- Inventors
- 127
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 2 | 4 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 3 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 6 |
| 2023 | 1 | 2 |
| 2024 | 4 | 4 |
| 2025 | 1 | 7 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual temperature liquid oxygen subcooling in an air separation unit22 Sep 2026US 12,742,591 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Facility and method for producing biomethane with limited methane loss and limited CO2 emissions30 Jun 2026US 12,667,805 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Dynamic rate limiter for load sharing application24 Feb 2026US 12,560,379 B2Saudi Arabian Oil Company
- Method and system for determining operating conditions of liquefied natural gas plant18 Mar 2025US 12,253,306 B2Chiyoda Corporation
- Method and system for controlling refrigerant composition in case of gas tube leaks in a heat exchanger30 Jul 2024US 12,050,057 B2Shell USA, Inc.
- Process and apparatus for producing argon by cryogenic air separation23 Jul 2026US 2026/0210624 A1
- Low-temperature distillation method for capturing carbon dioxide11 Jun 2026US 2026/0160489 A1Shihezi University
- Multimodal microgrid system2 Apr 2026US 2026/0095051 A1Linkville Land Holdings LLC
- Recovering Natural Gas Liquids19 Feb 2026US 2026/0049764 A1Saudi Arabian Oil Company
- Dynamic control of reflux rate in hydrocarbon distillation12 Feb 2026US 2026/0043606 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Multivariable process control method and apparatus38US 5,396,416 AContinental Controls Corporation · 1995
- Multivariable process control method and apparatus24US 5,488,561 AContinental Controls Corporation · 1996
- Method for operating a cryogenic plant18US 6,666,049 B1Praxair Technology, Inc. · 2003
- Method for creating a linear programming model of an industrial process facility16US 7,257,451 B2Exxon Mobil Chemical Patents Inc. · 2007
- Pressure responsive fractionation control13US 4,164,452 APhillips Petroleum Company · 1979