G01N 31/005
Investigating the presence of an element by oxidation
Official title: {investigating the presence of an element by oxidation (G01N31/12 takes precedence)}
G01N31/005 (Investigating the presence of an element by oxidation) appears on 218 US grants and 118 published applications in this corpus.
Search patents in G01N- Granted patents
- 218
- Published applications
- 118
- Assignees
- 158
- Inventors
- 470
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 7 | 0 |
| 1982 | 12 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 3 |
| 2003 | 5 | 7 |
| 2004 | 8 | 8 |
| 2005 | 1 | 8 |
| 2006 | 4 | 6 |
| 2007 | 4 | 5 |
| 2008 | 3 | 3 |
| 2009 | 5 | 5 |
| 2010 | 5 | 0 |
| 2011 | 3 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 3 | 3 |
| 2015 | 3 | 4 |
| 2016 | 3 | 6 |
| 2017 | 3 | 3 |
| 2018 | 2 | 5 |
| 2019 | 4 | 6 |
| 2020 | 1 | 4 |
| 2021 | 5 | 7 |
| 2022 | 7 | 2 |
| 2023 | 5 | 12 |
| 2024 | 2 | 3 |
| 2025 | 8 | 7 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods of detecting perfluoroalkyl or polyfluoroalkyl substances6 Oct 2026US 12,754,174 B2Shaw Industries Group, Inc.
- Inspection apparatus and inspection method30 Dec 2025US 12,510,526 B2Shimadzu Corporation
- Total organic carbon measurement method and total organic carbon measurement device25 Nov 2025US 12,480,928 B2Shimadzu Corporation
- Fuse for detecting failure of gas trap4 Nov 2025US 12,461,082 B2Bl Technologies, Inc.
- Derived alkalinity16 Sep 2025US 12,416,598 B2Hach Company
- Method for quantifying the pyrogenic carbon present in a sample of an organo-mineral or mineral matrix comprising charcoal and/or biochar10 Sep 2026US 2026/0266797 A1
- Multi-polar electrodes for detection of per and polyfluoroalkyl substances using total organic fluoride30 Jul 2026US 2026/0219145 A1Hach Company
- Methods of detecting perfluoroalkyl or polyfluoroalkyl substances2 Jul 2026US 2026/0185971 A1Shaw Industries Group, Inc.
- System and method for determining a concentration of an analyte in a carrier gas of a quasi-binary or binary gas mixture14 May 2026US 2026/0133158 A1Dräger Safety AG & Co. KGaA
- Analysis method for sample containing mercury30 Apr 2026US 2026/0118326 A1Bl Tec K.K.
Most cited
By later US patents
- Process and apparatus for measuring gaseous fixed nitrogen species509US 4,333,735 AExxon Research & Engineering Co. · 1982
- SO.sub.2 sensor181US 5,338,515 ACatalytica, Inc. · 1994
- Photolytic interface for HPLC-chemiluminescence detection of non volatile N-nitroso compounds76US 5,094,815 ACornell Research Foundation, Inc. · 1992
- Method and apparatus for the determination of dissolved carbon in water56US 5,132,094 ASievers Instruments, Inc. · 1992
- Method and apparatus for measuring the amount of carbon and other organics in an aqueous solution51US 4,277,438 AAstro Resources Corporation · 1981