G01N 9/02
Investigating density or specific gravity of materials: by measuring weight of a
Official title: by measuring weight of a known volume
G01N9/02 (Investigating density or specific gravity of materials: by measuring weight of a) appears on 178 US grants and 156 published applications in this corpus.
Search patents in G01N- Granted patents
- 178
- Published applications
- 156
- Assignees
- 146
- Inventors
- 434
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 4 |
| 2003 | 6 | 4 |
| 2004 | 4 | 4 |
| 2005 | 0 | 3 |
| 2006 | 1 | 5 |
| 2007 | 4 | 4 |
| 2008 | 4 | 3 |
| 2009 | 1 | 0 |
| 2010 | 4 | 4 |
| 2011 | 0 | 5 |
| 2012 | 3 | 2 |
| 2013 | 5 | 7 |
| 2014 | 2 | 5 |
| 2015 | 4 | 0 |
| 2016 | 3 | 10 |
| 2017 | 5 | 5 |
| 2018 | 7 | 9 |
| 2019 | 7 | 13 |
| 2020 | 5 | 4 |
| 2021 | 5 | 10 |
| 2022 | 9 | 15 |
| 2023 | 9 | 15 |
| 2024 | 10 | 12 |
| 2025 | 7 | 8 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sensor system for dry powder electrode formation and methods of using the same8 Sep 2026US 12,728,565 B2Matthews International Corporation
- Method for characterizing a coating21 Jul 2026US 12,687,476 B2MTU Aero Engines AG
- Tank body device for measuring slurry density of thermal power generation slurry in thermal power plants2 Jun 2026US 12,644,810 B2
- Blood indicator panel2 Jun 2026US 12,644,880 B2Cypher Medical, LLC
- Collapsible fluid collection container for blood detection and measurement19 May 2026US 12,631,618 B2Cypher Medical, LLC
- 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
- Monitoring crop in a crop bin11 Jun 2026US 2026/0160657 A1AGCO International GmbH
- Test apparatus for the dynamic measurement of moisture transport and storage properties of porous materials30 Apr 2026US 2026/0118246 A1Universidad Del Pais Vasco/Euskal Herriko Unibertsitatea
- Determining a surface characteristic of a roadway using an imaging device29 Jan 2026US 2026/0029231 A1Troxler Electronic Laboratories, Inc.
- Bale Moisture Measurement22 Jan 2026US 2026/0020531 A1Deere & Company
Most cited
By later US patents
- Method and apparatus for measuring the density of fluids96US 4,956,793 AHoneywell Inc. · 1990
- Measurement/control of sheet material using at least one sensor array75US 5,563,809 AABB Industrial Systems, Inc. · 1996
- Mass-volume flowmeter42US 5,121,658 A1992
- Gas comparison pycnometer26US 4,083,228 ASystems, Science and Software · 1978
- Apparatus for measuring the density of a body25US 4,184,371 A1980