G01N 31/225
For oxygen
Official title: {for oxygen, e.g. including dissolved oxygen}
G01N31/225 (For oxygen) appears on 124 US grants and 126 published applications in this corpus.
Search patents in G01N- Granted patents
- 124
- Published applications
- 126
- Assignees
- 119
- Inventors
- 369
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 1 |
| 2003 | 3 | 7 |
| 2004 | 5 | 8 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 10 |
| 2008 | 1 | 5 |
| 2009 | 3 | 3 |
| 2010 | 6 | 6 |
| 2011 | 2 | 12 |
| 2012 | 4 | 2 |
| 2013 | 5 | 2 |
| 2014 | 5 | 2 |
| 2015 | 2 | 5 |
| 2016 | 3 | 6 |
| 2017 | 2 | 6 |
| 2018 | 8 | 11 |
| 2019 | 3 | 6 |
| 2020 | 6 | 7 |
| 2021 | 6 | 4 |
| 2022 | 4 | 3 |
| 2023 | 4 | 5 |
| 2024 | 3 | 4 |
| 2025 | 4 | 4 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for determining concentration of compound in ultrapure water2 Dec 2025US 12,487,215 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Reagent for measuring oxygen concentration in cell and tissue28 Oct 2025US 12,454,541 B2National University Corporation Gunma University
- Headspace eliminating microtiter plate lid and method of optically measuring well oxygen concentration through the lid8 Jul 2025US 12,350,674 B2Agilent Technologies, Inc.
- Color sensor with gas generating layer11 Feb 2025US 12,220,284 B2Thermographic Measurements Ltd
- Colorimetric sensor formulation and use thereof31 Dec 2024US 12,180,378 B2
- Headspace eliminating microtiter plate lid and method of optically measuring well oxygen concentration through the lid9 Oct 2025US 2025/0312795 A1Agillent Technologies, Inc.
- Headspace Eliminating Microtiter Plate Lid17 Jul 2025US 2025/0229272 A1Agilent Technologies, Inc.
- Compounds for the measurement of the oxygen concentration5 Jun 2025US 2025/0177576 A1Center for Neuromusculoskeletal Restorative Medicine Limited
- Oxygen Sensing Composition and Method of Use27 Feb 2025US 2025/0067712 A1
- Colorimetric sensor and its preparation procedure19 Sep 2024US 2024/0310341 A1MATERIAS S.r.l.
Most cited
By later US patents
- Polymeric luminophores for sensing of oxygen280US 5,580,527 AMoltech Corporation · 1996
- Fluorescent reporter beads for fluid analysis224US 5,747,349 AUniversity of Washington · 1998
- Oxygen sensing membranes and methods of making same170US 6,190,612 B1Bayer Aktiengesellschaft · 2001
- Oxygen sensing membranes and methods of making same98US 5,863,460 AChiron Diagnostics Corporation · 1999
- Oxygen indicator for packaging97US 4,526,752 A1985