C02F 2101/203
Iron or iron compound
Official title: {Iron or iron compound}
C02F2101/203 (Iron or iron compound) appears on 391 US grants and 624 published applications in this corpus.
Search patents in C02F- Granted patents
- 391
- Published applications
- 624
- Assignees
- 396
- Inventors
- 1,280
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 3 |
| 2002 | 4 | 1 |
| 2003 | 1 | 12 |
| 2004 | 7 | 12 |
| 2005 | 5 | 9 |
| 2006 | 5 | 8 |
| 2007 | 9 | 9 |
| 2008 | 2 | 7 |
| 2009 | 5 | 13 |
| 2010 | 2 | 10 |
| 2011 | 4 | 21 |
| 2012 | 12 | 25 |
| 2013 | 14 | 20 |
| 2014 | 10 | 36 |
| 2015 | 10 | 35 |
| 2016 | 19 | 26 |
| 2017 | 15 | 35 |
| 2018 | 15 | 40 |
| 2019 | 24 | 45 |
| 2020 | 30 | 32 |
| 2021 | 35 | 36 |
| 2022 | 26 | 30 |
| 2023 | 23 | 35 |
| 2024 | 26 | 45 |
| 2025 | 31 | 49 |
| 2026 | 18 | 30 |
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
- Process for removing hardness and total organic carbon from drinking water25 Aug 2026US 12,715,796 B2Veolia Water Solutions & Technologies Support
- Fluids, solids and heavy component removal from reclaimer process liquid streams18 Aug 2026US 12,708,872 B2Axens
- Adapter plate for coupling a water treatment controller to a valve body11 Aug 2026US 12,704,195 B2Franklin Fueling Systems, Inc.
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Filtering System for a Storm Water Catch Basin17 Sep 2026US 2026/0274709 A1Trash Guard Incorporated
- Impurity removal from brines pre/post direct lithium extraction10 Sep 2026US 2026/0265093 A1Schlumberger Technology Corporation
- Solid formulations for neutralizing acidic tailings ponds and methods of neutralizing acidic tailings ponds27 Aug 2026US 2026/0250165 A1
- Porous body, adsorbent including the porous body, and method of removing metal and/or metal ion with the adsorbent20 Aug 2026US 2026/0241370 A1Mitsui Mining & Smelting Co., Ltd.
- Method of processing drinking water treatment material20 Aug 2026US 2026/0242268 A1Reale Lime
Most cited
By later US patents
- Membrane based fluid treatment systems110US 7,186,344 B2Water Visions International, Inc. · 2007
- Methods and apparatus for the application of combined fields to disinfect fluids89US 5,997,812 ACoolant Treatment Systems, L.L.C. · 1999
- Method and system for purifying liquid88US 3,985,648 AAlmag Pollution Control Corporation · 1976
- Process and apparatus for removal of mineral contaminants from water68US 5,096,596 AHellenbrand Water Conditioners, Inc. · 1992
- System to remove contaminants from water50US 4,659,463 AWater Soft, Inc. · 1987