C02F 2101/10
Inorganic compounds
C02F2101/10 (Inorganic compounds) appears on 5,551 US grants and 7,294 published applications in this corpus.
Search patents in C02F- Granted patents
- 5,551
- Published applications
- 7,294
- Assignees
- 3,561
- Inventors
- 15,500
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 36 | 0 |
| 1978 | 25 | 0 |
| 1979 | 24 | 0 |
| 1980 | 29 | 0 |
| 1981 | 22 | 0 |
| 1982 | 25 | 0 |
| 1983 | 20 | 0 |
| 1984 | 21 | 0 |
| 1985 | 15 | 0 |
| 1986 | 22 | 0 |
| 1987 | 25 | 0 |
| 1988 | 28 | 0 |
| 1989 | 21 | 0 |
| 1990 | 22 | 0 |
| 1991 | 43 | 0 |
| 1992 | 38 | 0 |
| 1993 | 50 | 0 |
| 1994 | 53 | 0 |
| 1995 | 40 | 0 |
| 1996 | 43 | 0 |
| 1997 | 36 | 0 |
| 1998 | 35 | 0 |
| 1999 | 54 | 0 |
| 2000 | 63 | 0 |
| 2001 | 82 | 18 |
| 2002 | 82 | 88 |
| 2003 | 82 | 114 |
| 2004 | 81 | 132 |
| 2005 | 85 | 155 |
| 2006 | 79 | 130 |
| 2007 | 103 | 156 |
| 2008 | 103 | 181 |
| 2009 | 87 | 184 |
| 2010 | 120 | 226 |
| 2011 | 123 | 223 |
| 2012 | 130 | 232 |
| 2013 | 128 | 232 |
| 2014 | 150 | 309 |
| 2015 | 151 | 406 |
| 2016 | 196 | 395 |
| 2017 | 241 | 410 |
| 2018 | 287 | 391 |
| 2019 | 329 | 409 |
| 2020 | 333 | 426 |
| 2021 | 295 | 467 |
| 2022 | 332 | 442 |
| 2023 | 280 | 400 |
| 2024 | 317 | 425 |
| 2025 | 348 | 445 |
| 2026 | 187 | 298 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C02F 2101/20Heavy metals or heavy metal compoundsIndexing code2,692
- C02F 2101/16Nitrogen compoundsIndexing code1,390
- C02F 2101/101Sulfur compoundsIndexing code720
- C02F 2101/105Phosphorus compoundsIndexing code674
- C02F 2101/12Halogens or halogen-containing compoundsIndexing code670
- C02F 2101/103Arsenic compoundsIndexing code589
- C02F 2101/106Selenium compoundsIndexing code176
- C02F 2101/108Boron compoundsIndexing code98
Recent patents
- System and method for leachate biodegradation through aquatic microorganism digestion6 Oct 2026US 12,753,098 B1
- Silicon-aluminum-iron composite material, and preparation method therefor and use thereof29 Sep 2026US 12,746,526 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Separating ions in water using plastic ice VII29 Sep 2026US 12,747,165 B2International Business Machines Corporation
- Pure water production system and pure water production method29 Sep 2026US 12,747,171 B2Organo Corporation
- Electrochemical nitrogen and phosphorus removal device and method29 Sep 2026US 12,747,176 B2Beijing Drainage Group Co., Ltd
- Photothermal polymeric aerogels for wastewater detoxification and water recycling8 Oct 2026US 2026/0308020 A1University of Kentucky Research Foundation
- Derivatized polyamine polymers for use in metal scavenging applications8 Oct 2026US 2026/0308027 A1Bl Technologies, Inc.
- Operation method of water treatment apparatus and water treatment apparatus8 Oct 2026US 2026/0308031 A1Kubota Corporation
- 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.
- Method for Treating Phosphorus-Containing Wastewater Produced During Preparation of Sulfonamide Compound8 Oct 2026US 2026/0308035 A1Nanhai Beisha Pharmaceutical Co., Ltd.
Most cited
By later US patents
- Apparatus for on-site production of nitrate ions409US 7,514,058 B1The Lata Group, Inc. · 2009
- Flue gas control system of coal combustion boiler and operating method thereof122US 8,071,060 B2Mitsubishi Heavy Industries, Ltd. · 2011
- Membrane based fluid treatment systems110US 7,186,344 B2Water Visions International, Inc. · 2007
- Methods to de-sulfate saline streams107US 7,789,159 B12010
- Purification of fluids with nanomaterials104US 7,211,320 B1Seldon Technologies, LLC · 2007