G01N 15/082
Investigating permeability by forcing a fluid through a sample
Official title: {Investigating permeability by forcing a fluid through a sample}
G01N15/082 (Investigating permeability by forcing a fluid through a sample) appears on 858 US grants and 847 published applications in this corpus.
Search patents in G01N- Granted patents
- 858
- Published applications
- 847
- Assignees
- 569
- Inventors
- 2,645
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 5 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 4 | 0 |
| 2000 | 10 | 0 |
| 2001 | 13 | 0 |
| 2002 | 13 | 15 |
| 2003 | 13 | 19 |
| 2004 | 14 | 23 |
| 2005 | 19 | 24 |
| 2006 | 21 | 26 |
| 2007 | 20 | 22 |
| 2008 | 16 | 19 |
| 2009 | 7 | 22 |
| 2010 | 18 | 16 |
| 2011 | 20 | 15 |
| 2012 | 9 | 13 |
| 2013 | 15 | 24 |
| 2014 | 16 | 50 |
| 2015 | 28 | 40 |
| 2016 | 28 | 36 |
| 2017 | 28 | 40 |
| 2018 | 31 | 54 |
| 2019 | 54 | 70 |
| 2020 | 51 | 52 |
| 2021 | 54 | 47 |
| 2022 | 49 | 51 |
| 2023 | 56 | 32 |
| 2024 | 39 | 59 |
| 2025 | 32 | 48 |
| 2026 | 31 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Caprock analysis methods and systems22 Sep 2026US 12,742,903 B2Saudi Arabian Oil Company
- Seepage erosion test system1 Sep 2026US 12,723,965 B2Changsha University of Science and Technology
- Device and method for evaluation protection performance using dynamic swatch testing cell1 Sep 2026US 12,723,966 B2Agency for Defense Development
- Method and device for predicting ability of the temporary plugging agent to plug cracks and storage medium11 Aug 2026US 12,704,451 B2Beijing Institute of Petrochemical Technology
- Method for quantitative evaluation on sensitivity of shale oil and gas reservoir to injected fluids28 Jul 2026US 12,693,249 B2Northeast Petroleum University
- System for determining filter status8 Oct 2026US 2026/0309611 A1
- Methods and devices for generating flow through porous media using drill cuttings1 Oct 2026US 2026/0298081 A1University of Wyoming
- Test system of rock mass for seepage coupling and permeability testing under deep complex conditions17 Sep 2026US 2026/0276515 A1Sichuan University
- Exhaust system state determination method and exhaust system state determination device3 Sep 2026US 2026/0258745 A1Nissan Motor Co., Ltd.
- System and method for measuring liquid permeability20 Aug 2026US 2026/0243648 A1
Most cited
By later US patents
- Air filter monitoring system159US 7,244,294 B22007
- Vessel, coating, inspection and processing apparatus154US 7,985,188 B2CV Holdings LLC · 2011
- Intelligent thermostat system for monitoring a refrigerant-cycle apparatus134US 7,331,187 B22008
- Method and device for testing the permeability of membrane filters113US 4,614,109 ABrunswick Corporation · 1986
- Apparatus for testing membrane filter integrity108US 5,353,630 AFiltec Corporation · 1994