G01N 33/2882
Markers
Official title: {Markers}
G01N33/2882 (Markers) appears on 113 US grants and 102 published applications in this corpus.
Search patents in G01N- Granted patents
- 113
- Published applications
- 102
- Assignees
- 75
- Inventors
- 298
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 5 |
| 2009 | 2 | 2 |
| 2010 | 2 | 1 |
| 2011 | 0 | 3 |
| 2012 | 4 | 4 |
| 2013 | 2 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 7 |
| 2016 | 5 | 9 |
| 2017 | 9 | 8 |
| 2018 | 6 | 12 |
| 2019 | 10 | 4 |
| 2020 | 8 | 7 |
| 2021 | 2 | 4 |
| 2022 | 6 | 5 |
| 2023 | 3 | 4 |
| 2024 | 3 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for determining authenticity and adulteration of marked petroleum hydrocarbons30 Dec 2025US 12,510,529 B2Sicpa Holding SA
- Control systems and methods for rock cuttings identification25 Mar 2025US 12,258,858 B2Saudi Arabian Oil Company
- Methods of identifying a hydrocarbon fuel17 Dec 2024US 12,169,192 B2Afton Chemical Corporation
- Method of marking a petroleum hydrocarbon9 Jul 2024US 12,031,098 B2Sicpa Holding SA
- Method of determining renewable carbon content while producing and blending biogenic-based fuels or blendstocks with fossil fuel in a refining or blending facility20 Feb 2024US 11,906,505 B2Chevron U.S.A.Inc.
- Method of marking a petroleum hydrocarbon3 Oct 2024US 2024/0327736 A1Sicpa Holding SA
- A method of detecting one or more markers in a petroleum fuel using a photoacoustic detector4 Jul 2024US 2024/0219366 A1BASF SE
- Control systems and methods for rock cuttings identification23 May 2024US 2024/0167381 A1Saudi Arabian Oil Company
- Hydrophobic fluorescent carbon quantum dot for marker application in hydrocarbon liquids and process of preparation thereof9 Nov 2023US 2023/0363193 A1Indian Oil Corporation Limited
- Microfluidic System for Diesel Detection18 May 2023US 2023/0149921 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Marking of products to establish identity and source99US 5,429,952 ABiocode, Inc. · 1995
- Reservoir monitoring97US 6,645,769 B2Sinvent AS · 2003
- Method for tagging petroleum products91US 5,525,516 AEastman Chemical Company · 1996
- Method of chemical tagging75US 5,849,590 A1998
- Tracers for heavy oil61US 6,331,436 B1Texaco Inc. · 2001