G01N 15/08
Investigating permeability, pore-volume, or surface area of porous materials
G01N15/08 (Investigating permeability, pore-volume, or surface area of porous materials) appears on 1,808 US grants and 1,692 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,808
- Published applications
- 1,692
- Assignees
- 998
- Inventors
- 5,034
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 12 | 0 |
| 1984 | 17 | 0 |
| 1985 | 23 | 0 |
| 1986 | 20 | 0 |
| 1987 | 32 | 0 |
| 1988 | 20 | 0 |
| 1989 | 24 | 0 |
| 1990 | 25 | 0 |
| 1991 | 27 | 0 |
| 1992 | 21 | 0 |
| 1993 | 12 | 0 |
| 1994 | 27 | 0 |
| 1995 | 20 | 0 |
| 1996 | 17 | 0 |
| 1997 | 21 | 0 |
| 1998 | 21 | 0 |
| 1999 | 12 | 0 |
| 2000 | 13 | 0 |
| 2001 | 20 | 2 |
| 2002 | 23 | 28 |
| 2003 | 26 | 29 |
| 2004 | 25 | 38 |
| 2005 | 26 | 39 |
| 2006 | 28 | 40 |
| 2007 | 36 | 42 |
| 2008 | 31 | 32 |
| 2009 | 19 | 44 |
| 2010 | 29 | 38 |
| 2011 | 33 | 36 |
| 2012 | 26 | 30 |
| 2013 | 32 | 51 |
| 2014 | 39 | 82 |
| 2015 | 54 | 77 |
| 2016 | 48 | 78 |
| 2017 | 55 | 104 |
| 2018 | 64 | 96 |
| 2019 | 122 | 121 |
| 2020 | 108 | 120 |
| 2021 | 99 | 110 |
| 2022 | 106 | 100 |
| 2023 | 114 | 93 |
| 2024 | 93 | 111 |
| 2025 | 82 | 95 |
| 2026 | 62 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 15/082Investigating permeability by forcing a fluid through a sample858
- G01N 15/088Investigating volume, surface area, size or distribution of pores485
- G01N 15/0806Details327
- G01N 2015/084Testing filtersIndexing code296
- G01N 2015/0846By use of radiationIndexing code229
- G01N 2015/086Of films, membranes or pelliculesIndexing code117
- G01N 2015/0866SorptionIndexing code74
- G01N 2015/0813Measuring intrusionIndexing code33
Recent patents
- Systems and methods for determining a wellbore-casing volume6 Oct 2026US 12,753,691 B2Saudi Arabian Oil Company
- Construction material assessment method and systems6 Oct 2026US 12,754,146 B2
- Filter unit29 Sep 2026US 12,746,493 B2Samsung Biologics Co., Ltd.
- Generated particle inspection device and inspection method thereof for pillar-shaped honeycomb filter22 Sep 2026US 12,742,718 B2NGK Insulators, Ltd.
- In situ concentration of hydrocarbons in rock22 Sep 2026US 12,742,768 B2Saudi Arabian Oil Company
- 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
- Determining removal efficiency of filter materials24 Sep 2026US 2026/0287491 A1CPS Technology Holdings LLC
- Determination apparatus, determination method, determination program, and water treatment system17 Sep 2026US 2026/0273472 A1Yokogawa Electric Corporation
- Test system of rock mass for seepage coupling and permeability testing under deep complex conditions17 Sep 2026US 2026/0276515 A1Sichuan University
Most cited
By later US patents
- Method and apparatus for determining distribution of fluids317US 4,671,102 AShell Oil Company · 1987
- Sample holder306US 4,827,761 AShell Oil Company · 1989
- Apparatus for analysis of failure of material290US 4,856,341 AShell Oil Company · 1989
- Method for analysis of failure of material employing imaging288US 4,884,455 AShell Oil Company · 1989
- Method for determining capillary pressure and relative permeability by imaging216US 4,893,504 AShell Oil Company · 1990