G05D 11/02
Controlling ratio of two or more flows of fluid or fluent material
G05D11/02 (Controlling ratio of two or more flows of fluid or fluent material) appears on 1,293 US grants and 1,092 published applications in this corpus.
Search patents in G05D- Granted patents
- 1,293
- Published applications
- 1,092
- Assignees
- 767
- Inventors
- 2,799
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 17 | 0 |
| 1978 | 16 | 0 |
| 1979 | 14 | 0 |
| 1980 | 20 | 0 |
| 1981 | 12 | 0 |
| 1982 | 20 | 0 |
| 1983 | 12 | 0 |
| 1984 | 8 | 0 |
| 1985 | 15 | 0 |
| 1986 | 16 | 0 |
| 1987 | 16 | 0 |
| 1988 | 17 | 0 |
| 1989 | 18 | 0 |
| 1990 | 11 | 0 |
| 1991 | 23 | 0 |
| 1992 | 18 | 0 |
| 1993 | 20 | 0 |
| 1994 | 24 | 0 |
| 1995 | 15 | 0 |
| 1996 | 19 | 0 |
| 1997 | 21 | 0 |
| 1998 | 17 | 0 |
| 1999 | 32 | 0 |
| 2000 | 22 | 0 |
| 2001 | 23 | 6 |
| 2002 | 23 | 26 |
| 2003 | 19 | 21 |
| 2004 | 29 | 37 |
| 2005 | 13 | 35 |
| 2006 | 18 | 43 |
| 2007 | 18 | 43 |
| 2008 | 23 | 40 |
| 2009 | 27 | 36 |
| 2010 | 21 | 40 |
| 2011 | 18 | 31 |
| 2012 | 21 | 49 |
| 2013 | 28 | 57 |
| 2014 | 24 | 35 |
| 2015 | 40 | 45 |
| 2016 | 46 | 65 |
| 2017 | 48 | 48 |
| 2018 | 45 | 56 |
| 2019 | 55 | 53 |
| 2020 | 55 | 52 |
| 2021 | 48 | 62 |
| 2022 | 41 | 50 |
| 2023 | 52 | 52 |
| 2024 | 52 | 50 |
| 2025 | 43 | 38 |
| 2026 | 26 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process control for a carbon capture use and storage pipeline using spectroscopy1 Sep 2026US 12,724,434 B2Halliburton Energy Services.Inc.
- Water mixing device and water purifier including the same1 Sep 2026US 12,724,435 B2Coway Co., Ltd.
- Supply device and process for supplying a patient-side coupling unit with a gas mixture11 Aug 2026US 12,702,783 B2Drägerwerk AG & Co. KGaA
- Installation and method for distributing a gas mixture11 Aug 2026US 12,702,960 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Methods and assemblies for gas flow ratio control11 Aug 2026US 12,707,921 B2APPLIED Materials.Inc.
- Process and system for generation of coke drum outage projections8 Oct 2026US 2026/0310246 A1
- System and method for enhanced oil recovery utilizing alternating stacked liquid and gas slugs17 Sep 2026US 2026/0275841 A1Eor Etc LLC
- Method and apparatus for corrosion mitigation in wet pipes30 Jul 2026US 2026/0218837 A1General Air Products, Inc.
- System for fully automatically implementing automated liquid dispensing on multiple relay tanks9 Jul 2026US 2026/0192262 A1Lisure Science (Suzhou) Co., Ltd
- Gas supply system, processing apparatus, gas supply method, and method of manufacturing semiconductor device2 Jul 2026US 2026/0185230 A1Kokusai Electric Corporation
Most cited
By later US patents
- Gas-line system for semiconductor-manufacturing apparatus492US 6,662,817 B2ASM Japan K .K. · 2003
- Apparatus for the monitored metering of no into patients' respiratory air487US 5,531,218 AMesser Griesheim GmbH · 1996
- Pressure flow and concentration control of oxygen/ozone gas mixtures450US 5,904,170 AAPPLIED Materials.Inc. · 1999
- Controlled additive metering system248US 4,265,266 AHalliburton Company · 1981
- Compounder apparatus168US 9,364,394 B2DEKA Products Limited Partnership · 2016