G01F 1/88
With differential-pressure measurement to determine the volume flow
Official title: with differential-pressure measurement to determine the volume flow
G01F1/88 (With differential-pressure measurement to determine the volume flow) appears on 234 US grants and 202 published applications in this corpus.
Search patents in G01F- Granted patents
- 234
- Published applications
- 202
- Assignees
- 152
- Inventors
- 458
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 2 |
| 2003 | 4 | 1 |
| 2004 | 2 | 6 |
| 2005 | 4 | 4 |
| 2006 | 2 | 3 |
| 2007 | 3 | 6 |
| 2008 | 3 | 9 |
| 2009 | 10 | 12 |
| 2010 | 3 | 12 |
| 2011 | 12 | 10 |
| 2012 | 5 | 7 |
| 2013 | 9 | 4 |
| 2014 | 9 | 7 |
| 2015 | 3 | 13 |
| 2016 | 6 | 12 |
| 2017 | 8 | 9 |
| 2018 | 10 | 12 |
| 2019 | 10 | 9 |
| 2020 | 12 | 14 |
| 2021 | 13 | 10 |
| 2022 | 7 | 10 |
| 2023 | 8 | 10 |
| 2024 | 14 | 7 |
| 2025 | 8 | 12 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Real time flow rate and rheology measurement30 Jun 2026US 12,669,023 B2Weatherford Technology Holdings, LLC
- Integrated maintenance system for multiphase metering system30 Jun 2026US 12,669,360 B2Chevron U.S.A.Inc.
- System for monitoring real-time flow assurance occurrences9 Jun 2026US 12,650,075 B2Petroleo Brasileiro S.A. - Petrobras
- Measuring device for metering fluids, and method for metering by means of a measuring device of this type14 Apr 2026US 12,601,620 B2AVL List GmbH
- Flow rate measurement method for spiral throttling component24 Feb 2026US 12,560,463 B2Cnooc (China) Co., Ltd
- Flow rate and rheology measurement with enhanced accuracy at low flow rates9 Jul 2026US 2026/0193979 A1
- Flow metering devices, systems, and methods18 Dec 2025US 2025/0382873 A1VMC Patent Inc.
- Mixed-phase fluid mass flow measurement method and throttling-type photon quantum mixed-phase flowmeter13 Nov 2025US 2025/0347543 A1Chengdu Sea Pioneers Technology Co., Ltd.
- Flow rate measurement method for spiral throttling component16 Oct 2025US 2025/0321128 A1Cnooc (China) Co., Ltd
- Measurement of flow rate, density, viscosity, and rheology of multiphase fluids in a pipe21 Aug 2025US 2025/0264393 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Method for wide range gas flow system with real time flow measurement and correction590US 6,119,710 ACyber Instrument Technologies LLC · 2000
- Method and apparatus for measuring multiphase flows198US 5,591,922 ASchlumberger Technology Corporation · 1997
- Digital gas metering system using tri-stable and bi-stable solenoids149US 5,875,817 AOrtech Corporation · 1999
- Pressure-based mass flow controller123US 5,868,159 AMKS Instruments, Inc. · 1999
- Transmitter having input for receiving a process variable from a remote sensor108US 5,606,513 ARosemount Inc. · 1997