G01N 9/36
Analysing materials by measuring the density or specific gravity
Official title: Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture (methods of measurement in general G01N9/02 - G01N9/32)
G01N9/36 (Analysing materials by measuring the density or specific gravity) appears on 283 US grants and 347 published applications in this corpus.
Search patents in G01N- Granted patents
- 283
- Published applications
- 347
- Assignees
- 242
- Inventors
- 827
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 1 | 7 |
| 2004 | 5 | 9 |
| 2005 | 6 | 11 |
| 2006 | 7 | 14 |
| 2007 | 5 | 8 |
| 2008 | 8 | 6 |
| 2009 | 7 | 7 |
| 2010 | 5 | 9 |
| 2011 | 3 | 11 |
| 2012 | 8 | 7 |
| 2013 | 3 | 19 |
| 2014 | 15 | 17 |
| 2015 | 13 | 15 |
| 2016 | 16 | 19 |
| 2017 | 17 | 11 |
| 2018 | 8 | 23 |
| 2019 | 14 | 27 |
| 2020 | 16 | 16 |
| 2021 | 22 | 21 |
| 2022 | 10 | 23 |
| 2023 | 20 | 18 |
| 2024 | 19 | 19 |
| 2025 | 9 | 15 |
| 2026 | 11 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Specific gravity measurement device29 Sep 2026US 12,748,027 B2Alfa Mirage Co., Ltd.
- Method and assembly for measuring solid precipitation in drilling fluids1 Sep 2026US 12,723,959 B2Istanbul Teknik Universitesi
- Enhanced supercritical fluid measurement with vibratory sensors14 Jul 2026US 12,680,853 B2Micro Motion, Inc.
- Device for detecting sludge moisture content based on density and detection method thereof28 Apr 2026US 12,613,174 B2Shanghai Investigation, Design & Research Institute Co., Ltd.
- Method and device for determining a sample stream concentration value of an analyte in a sample stream7 Apr 2026US 12,596,058 B2TrueDyne Sensors AG
- Real time downhole api determination24 Sep 2026US 2026/0286843 A1Schlumberger Technology Corporation
- Surface density measurement apparatus and coating system24 Sep 2026US 2026/0287487 A1Contemporary Amperex Runzhi Software Technology Limited
- Climate control systems for use with high glide working fluids and methods for detecting a concentration of refrigerant in the working fluid17 Sep 2026US 2026/0276275 A1Copeland Corporation
- Climate control systems for use with high glide working fluids and methods for detecting a concentration of refrigerant in the working fluid17 Sep 2026US 2026/0276277 A1Copeland Corporation
- Sintered ore and method for producing same, and sintered ore for hydrogen reduction and method for producing same27 Aug 2026US 2026/0250798 A1Jfe Steel Corporation
Most cited
By later US patents
- Method and apparatus for testing the outflow from hydrocarbon wells on site89US 4,773,257 AChevron Research Company · 1988
- Gas/liquid flow measurement using coriolis-based flow meters75US 5,029,482 AChevron Research Company · 1991
- Methods and apparatus of downhole fluid analysis75US 7,461,547 B2Schlumberger Technology Corporation · 2008
- Hydrocarbon mass flow meter60US 5,259,239 A1993
- Methods and apparatus for the downhole characterization of formation fluids56US 7,526,953 B2Schlumberger Technology Corporation · 2009