G01N 9/002
Investigating density or specific gravity of materials: using variation of the resonant
Official title: {using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis (G01N9/34 takes precedence)}
G01N9/002 (Investigating density or specific gravity of materials: using variation of the resonant) appears on 713 US grants and 666 published applications in this corpus.
Search patents in G01N- Granted patents
- 713
- Published applications
- 666
- Assignees
- 281
- Inventors
- 1,111
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 11 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 13 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 7 | 0 |
| 2001 | 11 | 3 |
| 2002 | 14 | 15 |
| 2003 | 10 | 14 |
| 2004 | 10 | 16 |
| 2005 | 17 | 24 |
| 2006 | 23 | 26 |
| 2007 | 24 | 29 |
| 2008 | 18 | 29 |
| 2009 | 12 | 20 |
| 2010 | 22 | 24 |
| 2011 | 18 | 24 |
| 2012 | 20 | 17 |
| 2013 | 17 | 26 |
| 2014 | 25 | 29 |
| 2015 | 22 | 27 |
| 2016 | 28 | 41 |
| 2017 | 20 | 28 |
| 2018 | 29 | 24 |
| 2019 | 28 | 34 |
| 2020 | 38 | 27 |
| 2021 | 28 | 35 |
| 2022 | 20 | 40 |
| 2023 | 22 | 32 |
| 2024 | 35 | 31 |
| 2025 | 24 | 23 |
| 2026 | 23 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vibronic multisensor15 Sep 2026US 12,736,451 B2Endress + Hauser GmbH + Co. KG
- Measuring transducer of a measuring device, and measuring device25 Aug 2026US 12,716,759 B2Endress + Hauser Flowtec AG
- Vibronic multisensor11 Aug 2026US 12,704,484 B2Endress + Hauser GmbH + Co. KG
- Detecting and identifying a change in a vibratory meter21 Jul 2026US 12,687,420 B2Micro Motion, Inc.
- Vibronic measuring system14 Jul 2026US 12,680,851 B2Endress + Hauser Flowtec AG
- Vibronic measuring device8 Oct 2026US 2026/0309603 A1Endress + Hauser GmbH + Co. KG
- Vibronic measuring device8 Oct 2026US 2026/0309604 A1Endress + Hauser GmbH + Co. KG
- Vibronic measuring system for a fluid medium conveyed in a pipe8 Oct 2026US 2026/0309605 A1Endress + Hauser Flowtec AG
- Method for measuring downhole holdup, and method for determining downhole fluid interface and geometric distribution8 Oct 2026US 2026/0309606 A1China University of Petroleum (East China)
- Coriolis mass flow and density meter24 Sep 2026US 2026/0287486 A1Endress + Hauser Flowtec AG
Most cited
By later US patents
- Micromachined fluidic apparatus219US 6,477,901 B1Integrated Sensing Systems, Inc. · 2002
- Mass spectrometers and methods for rapid screening of libraries of different materials218US 5,959,297 ASymyx Technologies, Inc. · 1999
- Biosensor for measuring changes in viscosity and/or density of a fluid176US 5,494,639 ABehringwerke Aktiengesellschaft · 1996
- Digital flowmeter132US 6,311,136 B1Invensys Systems, Inc. · 2001
- Correction of coriolis flowmeter measurements due to multiphase flows131US 6,327,914 B1Micro Motion, Inc. · 2001