G01F 1/40
Details of construction of the flow constriction devices
G01F1/40 (Details of construction of the flow constriction devices) appears on 1,290 US grants and 1,043 published applications in this corpus.
Search patents in G01F- Granted patents
- 1,290
- Published applications
- 1,043
- Assignees
- 692
- Inventors
- 2,305
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 12 | 0 |
| 1981 | 10 | 0 |
| 1982 | 7 | 0 |
| 1983 | 15 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 4 | 0 |
| 1987 | 12 | 0 |
| 1988 | 15 | 0 |
| 1989 | 15 | 0 |
| 1990 | 14 | 0 |
| 1991 | 24 | 0 |
| 1992 | 15 | 0 |
| 1993 | 10 | 0 |
| 1994 | 13 | 0 |
| 1995 | 31 | 0 |
| 1996 | 29 | 0 |
| 1997 | 18 | 0 |
| 1998 | 29 | 0 |
| 1999 | 16 | 0 |
| 2000 | 23 | 0 |
| 2001 | 20 | 7 |
| 2002 | 22 | 19 |
| 2003 | 34 | 24 |
| 2004 | 20 | 33 |
| 2005 | 30 | 25 |
| 2006 | 21 | 32 |
| 2007 | 32 | 25 |
| 2008 | 19 | 34 |
| 2009 | 27 | 49 |
| 2010 | 26 | 30 |
| 2011 | 34 | 49 |
| 2012 | 25 | 27 |
| 2013 | 34 | 31 |
| 2014 | 21 | 37 |
| 2015 | 39 | 51 |
| 2016 | 49 | 73 |
| 2017 | 51 | 54 |
| 2018 | 62 | 55 |
| 2019 | 40 | 64 |
| 2020 | 56 | 56 |
| 2021 | 47 | 66 |
| 2022 | 45 | 53 |
| 2023 | 57 | 38 |
| 2024 | 48 | 48 |
| 2025 | 39 | 47 |
| 2026 | 20 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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 measurement and control device and associated method14 Jul 2026US 12,680,847 B1
- Linear variable differential pitot tube7 Jul 2026US 12,674,692 B2University of Pittsburgh—Of the Commonwealth System of Higher Education
- Multi-hole pressure probe and use of such a probe30 Jun 2026US 12,669,356 B2Isak Jonsson AB
- System and method for carbon emission reduction1 Oct 2026US 2026/0298683 A1Ge Digital Holdings LLC
- 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
- Sensing arrangements for medical devices13 Aug 2026US 2026/0232947 A1Fisher & Paykel Healthcare Limited
- Modular landfill gas measurement6 Aug 2026US 2026/0227324 A1EcoTec Solutions, Inc.
Most cited
By later US patents
- Delivery of aerosol medications for inspiration598US 5,404,871 AAradigm Corporation · 1995
- 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
- Flow measuring apparatus241US 5,443,075 APuritan-Bennett Corporation · 1995
- Method and apparatus for releasing a controlled amount of aerosol medication over a selectable time interval230US 5,755,218 AAradigm Corporation · 1998