G01F 1/36
The pressure or differential pressure being created by the use of flow
Official title: the pressure or differential pressure being created by the use of flow constriction
G01F1/36 (The pressure or differential pressure being created by the use of flow) appears on 1,942 US grants and 1,555 published applications in this corpus.
Search patents in G01F- Granted patents
- 1,942
- Published applications
- 1,555
- Assignees
- 1,012
- Inventors
- 3,449
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 16 | 0 |
| 1978 | 14 | 0 |
| 1979 | 12 | 0 |
| 1980 | 20 | 0 |
| 1981 | 21 | 0 |
| 1982 | 16 | 0 |
| 1983 | 23 | 0 |
| 1984 | 21 | 0 |
| 1985 | 21 | 0 |
| 1986 | 11 | 0 |
| 1987 | 18 | 0 |
| 1988 | 19 | 0 |
| 1989 | 27 | 0 |
| 1990 | 22 | 0 |
| 1991 | 35 | 0 |
| 1992 | 25 | 0 |
| 1993 | 19 | 0 |
| 1994 | 22 | 0 |
| 1995 | 35 | 0 |
| 1996 | 35 | 0 |
| 1997 | 26 | 0 |
| 1998 | 44 | 0 |
| 1999 | 28 | 0 |
| 2000 | 32 | 0 |
| 2001 | 34 | 7 |
| 2002 | 34 | 27 |
| 2003 | 48 | 38 |
| 2004 | 30 | 42 |
| 2005 | 43 | 37 |
| 2006 | 25 | 39 |
| 2007 | 39 | 42 |
| 2008 | 28 | 45 |
| 2009 | 37 | 69 |
| 2010 | 42 | 54 |
| 2011 | 51 | 64 |
| 2012 | 36 | 45 |
| 2013 | 55 | 47 |
| 2014 | 44 | 60 |
| 2015 | 50 | 72 |
| 2016 | 66 | 92 |
| 2017 | 65 | 78 |
| 2018 | 87 | 91 |
| 2019 | 65 | 90 |
| 2020 | 82 | 85 |
| 2021 | 70 | 98 |
| 2022 | 72 | 97 |
| 2023 | 85 | 68 |
| 2024 | 78 | 65 |
| 2025 | 67 | 70 |
| 2026 | 32 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01F 1/40Details of construction of the flow constriction devices1,290
- G01F 1/363With electrical or electro-mechanical indication471
- G01F 1/38The pressure or differential pressure being measured by means of a movable224
- G01F 1/37The pressure or differential pressure being measured by means of communicating tubes39
- G01F 1/366With mechanical or fluidic indication11
Recent patents
- Flow switch with variable orifice6 Oct 2026US 12,754,048 B2Barksdale, Inc.
- Apparatus with optical feature changing visual state6 Oct 2026US 12,754,049 B2Medici Therapeuticals, Inc.
- Flow rate calculation device and flow rate calculation method22 Sep 2026US 12,742,667 B2HORIBA STEC, Co., Ltd.
- Flowmeter with conditioning orifice plate11 Aug 2026US 12,704,393 B2Rosemount Inc.
- Flow meter for dosing pumps14 Jul 2026US 12,680,541 B2Advantage Controls, LLC
- System and method for carbon emission reduction1 Oct 2026US 2026/0298683 A1Ge Digital Holdings LLC
- Measurement apparatus10 Sep 2026US 2026/0266638 A1Yokogawa Electric Corporation
- Micro-electro-mechanical systems on fiber sensors for fluid characterization, flow, and density measurement10 Sep 2026US 2026/0266639 A1Saudi Arabian Oil Company
- Differential pressure assembly with protective boot and arrangement for amplifying pointer3 Sep 2026US 2026/0259095 A1Watts Regulator Co.
- Compact maintenance assembly for a process measuring system27 Aug 2026US 2026/0251487 A1
Most cited
By later US patents
- System and method for telemetrically providing intrabody spatial position621US 6,239,724 B1Remon Medical Technologies, Ltd. · 2001
- Delivery of aerosol medications for inspiration598US 5,404,871 AAradigm Corporation · 1995
- Gas flow rate verification unit475US 7,716,993 B2Ckd Corporation · 2010
- Automatic aerosol medication delivery system and methods279US 5,394,866 AAradigm Corporation · 1995
- Method for releasing controlled amount of aerosol medication273US 5,608,647 AAradigm Corporation · 1997