G01N 9/04
Of fluids
Official title: of fluids
G01N9/04 (Of fluids) appears on 60 US grants and 44 published applications in this corpus.
Search patents in G01N- Granted patents
- 60
- Published applications
- 44
- Assignees
- 55
- Inventors
- 156
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 2 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 5 |
| 2017 | 1 | 2 |
| 2018 | 5 | 3 |
| 2019 | 2 | 4 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 2 | 3 |
| 2023 | 3 | 3 |
| 2024 | 2 | 4 |
| 2025 | 2 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tank body device for measuring slurry density of thermal power generation slurry in thermal power plants2 Jun 2026US 12,644,810 B2
- Density-based coffee roast level characterization and/or dynamic coffee grinder control10 Mar 2026US 12,569,085 B2Midea Group Co., Ltd.
- Solid concentration digital analyzer17 Feb 2026US 12,553,810 B2Yellow Solutions Comercio, Servicos, Consultoria E. Representacao De Maquinas Eireli—ME
- Enhanced vehicle fuel quantity indication system4 Nov 2025US 12,459,662 B2Rockwell Collins, Inc.
- Molten-state suspended ellipsoidal droplet image processing algorithm based on dual-camera vision3 Jun 2025US 12,320,823 B2Shanghai Institute of Ceramics, Chinese Academy of Sciences
- System and method for predicting gel strength of drilling fluid while drilling using machine learning9 Jul 2026US 2026/0193949 A1King Fahd University of Petroleum and Minerals
- Apparatuses, systems, and methods to measure desiccant concentration in air conditioning systems6 Feb 2025US 2025/0044205 A1
- Enhanced vehicle fuel quantity indication system31 Oct 2024US 2024/0359807 A1Rockwell Collins, Inc.
- Tank body device for measuring slurry density of thermal power generation slurry in thermal power plants5 Sep 2024US 2024/0295480 A1Inner Mongolia Helin Power Generation Co., Ltd.
- Density-based coffee roast level characterization and/or dynamic coffee grinder control13 Jun 2024US 2024/0188750 A1Midea Group Co., Ltd.
Most cited
By later US patents
- Method and apparatus for measuring the density of fluids96US 4,956,793 AHoneywell Inc. · 1990
- Mass-volume flowmeter42US 5,121,658 A1992
- Net weight dispensing system and method24US 5,156,194 AThe Dow Chemical Company · 1992
- Fluid measuring device19US 4,244,218 A1981
- Device for detecting viscosity or specific gravity of liquid18US 4,905,499 AYamaichi Electric Mfg. Co., Ltd. · 1990