C02F 2101/101
Sulfur compounds
Official title: {Sulfur compounds}
C02F2101/101 (Sulfur compounds) appears on 720 US grants and 1,030 published applications in this corpus.
Search patents in C02F- Granted patents
- 720
- Published applications
- 1,030
- Assignees
- 540
- Inventors
- 2,063
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 3 | 5 |
| 2005 | 2 | 6 |
| 2006 | 0 | 7 |
| 2007 | 8 | 12 |
| 2008 | 6 | 11 |
| 2009 | 6 | 24 |
| 2010 | 13 | 22 |
| 2011 | 20 | 37 |
| 2012 | 14 | 44 |
| 2013 | 20 | 35 |
| 2014 | 26 | 43 |
| 2015 | 28 | 56 |
| 2016 | 46 | 71 |
| 2017 | 38 | 77 |
| 2018 | 59 | 79 |
| 2019 | 60 | 66 |
| 2020 | 64 | 74 |
| 2021 | 61 | 76 |
| 2022 | 62 | 57 |
| 2023 | 41 | 63 |
| 2024 | 34 | 74 |
| 2025 | 45 | 47 |
| 2026 | 25 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Treating produced water for beneficial reuse8 Sep 2026US 12,729,139 B2Renovo Resources LLC
- Integrated heat exchanger and sour water stripper1 Sep 2026US 12,722,986 B2Air Producuts and Chemicals, Inc.
- Fluids, solids and heavy component removal from reclaimer process liquid streams18 Aug 2026US 12,708,872 B2Axens
- Dewatering apparatus, systems, and methods18 Aug 2026US 12,709,558 B2Saudi Arabian Oil Company
- Method for process water treatment14 Jul 2026US 12,679,754 B2Metso Finland Oy
- Method for Complete Sulfate and Metal Removal from Produced Water Using a Three-Step Treatment Process for Reinjection8 Oct 2026US 2026/0308034 A1Molecular Filtration, Inc.
- Production of carbon compounds1 Oct 2026US 2026/0297505 A1
- Process for treatment of mine contact water17 Sep 2026US 2026/0274726 A2Teck Resources Limited
- Energy-saving disinfection- and oxidation system for water treatment10 Sep 2026US 2026/0265094 A1Mercaform Holding GmbH
- System for resource recovery and zero liquid discharge treatment of wastewater generated during a precursor manufacturing process for a cathode active material of secondary battery10 Sep 2026US 2026/0265105 A1Bkt Co., Ltd.
Most cited
By later US patents
- Apparatus for on-site production of nitrate ions409US 7,514,058 B1The Lata Group, Inc. · 2009
- Methods to de-sulfate saline streams107US 7,789,159 B12010
- Combined membrane and sorption process for selective ion removal79US 4,806,244 AThe Dow Chemical Company · 1989
- Method for removing arsenic or selenium from an aqueous solution containing a substantial background of another contaminant60US 4,935,146 AAluminum Company of America · 1990
- Method of treating fluids56US 5,122,274 AKDF Fluid Treatment, Inc. · 1992