G01F 11/021
Of the piston type
Official title: {of the piston type (G01F11/04 takes precedence)}
G01F11/021 (Of the piston type) appears on 1,038 US grants and 784 published applications in this corpus.
Search patents in G01F- Granted patents
- 1,038
- Published applications
- 784
- Assignees
- 635
- Inventors
- 1,869
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 20 | 0 |
| 1978 | 15 | 0 |
| 1979 | 11 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 16 | 0 |
| 1983 | 8 | 0 |
| 1984 | 9 | 0 |
| 1985 | 16 | 0 |
| 1986 | 9 | 0 |
| 1987 | 14 | 0 |
| 1988 | 19 | 0 |
| 1989 | 24 | 0 |
| 1990 | 22 | 0 |
| 1991 | 23 | 0 |
| 1992 | 20 | 0 |
| 1993 | 20 | 0 |
| 1994 | 22 | 0 |
| 1995 | 21 | 0 |
| 1996 | 23 | 0 |
| 1997 | 14 | 0 |
| 1998 | 25 | 0 |
| 1999 | 23 | 0 |
| 2000 | 23 | 0 |
| 2001 | 10 | 1 |
| 2002 | 21 | 19 |
| 2003 | 17 | 15 |
| 2004 | 16 | 25 |
| 2005 | 12 | 42 |
| 2006 | 14 | 22 |
| 2007 | 19 | 35 |
| 2008 | 15 | 53 |
| 2009 | 17 | 56 |
| 2010 | 28 | 31 |
| 2011 | 30 | 23 |
| 2012 | 29 | 32 |
| 2013 | 29 | 32 |
| 2014 | 24 | 32 |
| 2015 | 25 | 41 |
| 2016 | 31 | 37 |
| 2017 | 27 | 23 |
| 2018 | 25 | 36 |
| 2019 | 31 | 38 |
| 2020 | 31 | 35 |
| 2021 | 32 | 29 |
| 2022 | 35 | 35 |
| 2023 | 23 | 26 |
| 2024 | 22 | 28 |
| 2025 | 22 | 17 |
| 2026 | 15 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flow sensor system with connection assembly23 Jun 2026US 12,663,300 B2CRISI Medical Systems, Inc.
- Drive unit for motor dosing pump16 Jun 2026US 12,655,843 B2ProMinent GmbH
- Device for dispensing a fluid substance, usually a nutraceutical substance or a drug or a food2 Jun 2026US 12,644,746 B2Bormioli Pharma S.P.A.
- Machine for dispensing a controlled amount of a cosmetic composition26 May 2026US 12,638,322 B2L'oreal
- Pipetting apparatus and methods19 May 2026US 12,629,671 B2Revvity Health Sciences, Inc.
- Metering device having a plug valve3 Sep 2026US 2026/0259074 A1Scheugenpflug GmbH
- Two-dose dosage system for fluid product dispensing device20 Aug 2026US 2026/0241118 A1Aptar France SAS
- Robotic pipettes calibration system, method of use, and auxiliary devices20 Aug 2026US 2026/0243794 A1Qcc Hazorea Calibration Technologies A.C.S Ltd.
- Drug delivery device with indicator13 Aug 2026US 2026/0232914 A1Insulet Corporation
- Proportional volumetric dosing device30 Jul 2026US 2026/0219086 A1Mixtron S.R.L.
Most cited
By later US patents
- Bone cement injector1,545US 5,431,654 AStryker Corporation · 1995
- Inductance-based dose measurement in syringes551US 6,068,615 AHealth Hero Network, Inc. · 2000
- Device and method employing shape memory alloy491US 6,916,159 B2TheraSense, Inc. · 2005
- Infusion pumps and methods and delivery devices and methods with same487US 8,202,250 B2Medtronic MiniMed, Inc. · 2012
- Optical dose measurements in syringes480US 6,113,578 AHealth Hero Network, Inc. · 2000