G01N 9/30
Investigating density or specific gravity of materials: by using centrifugal effects
Official title: by using centrifugal effects
G01N9/30 (Investigating density or specific gravity of materials: by using centrifugal effects) appears on 22 US grants and 18 published applications in this corpus.
Search patents in G01N- Granted patents
- 22
- Published applications
- 18
- Assignees
- 16
- Inventors
- 43
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 3 |
| 2022 | 1 | 0 |
| 2023 | 3 | 2 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Non-destructive measurement, dispense, and replication of density gradients29 Sep 2026US 12,748,026 B2Beckman Coulter, Inc.
- Measurement cell and centrifugal sedimentation-type particle-size distribution measuring device using said measurement cell27 May 2025US 12,313,645 B2Horiba, Ltd.
- Sensor for quantifying production fluid percentage content14 Jan 2025US 12,196,077 B2Halliburton Energy Services.Inc.
- Non-invasive time-based sag testing apparatus12 Dec 2023US 11,840,926 B2Baker Hughes Oilfield Operations LLC
- Simultaneously pumping and measuring density of aircraft fuel25 Apr 2023US 11,635,031 B2Hamilton Sundstrand Corporation
- Density sensor for quantifying production fluid content24 Sep 2026US 2026/0286835 A1Halliburton Energy Services.Inc.
- Non-destructive measurement, dispense, and replication of density gradients2 Apr 2026US 2026/0092849 A1Beckman Coulter, Inc.
- Sensor for quantifying production fluid percentage content17 Apr 2025US 2025/0122800 A1Halliburton Energy Services.Inc.
- Density sensor for quantifying production fluid content1 Feb 2024US 2024/0035372 A1Halliburton Energy Services.Inc.
- Sensor for quantifying production fluid percentage content1 Feb 2024US 2024/0035376 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Automated miniature centrifuge36US 5,279,150 A1994
- System and method for detection, identification and monitoring of submicron-sized particles24US 6,051,189 AThe United States of America as represented by the Secretary of the Army · 2000
- Method of determining fabric type of a laundry load in a laundry treating appliance21US 9,243,987 B2Whirlpool Corporation · 2016
- Multiphase fluid flow meter (D#76,244)12US 4,282,760 ATexaco Inc. · 1981
- Thermocentrifugometric analysis10US 4,596,470 AResearch Corporation · 1986