C01F 11/464
Sulfates of ca from gases containing sulfur oxides
Official title: {Sulfates of Ca from gases containing sulfur oxides}
C01F11/464 (Sulfates of ca from gases containing sulfur oxides) appears on 149 US grants and 52 published applications in this corpus.
Search patents in C01F- Granted patents
- 149
- Published applications
- 52
- Assignees
- 87
- Inventors
- 292
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 4 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 4 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 4 |
| 2017 | 1 | 1 |
| 2018 | 3 | 8 |
| 2019 | 1 | 1 |
| 2020 | 3 | 2 |
| 2021 | 1 | 4 |
| 2022 | 2 | 3 |
| 2023 | 0 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process to convert reduced sulfur species and water into hydrogen and sulfuric acid28 Apr 2026US 12,612,701 B2California Institute of Technology
- Dry sorbent injection with recirculation21 Oct 2025US 12,447,439 B2Industrial Accessories Company
- Production of lithium chemicals and metallic lithium16 Sep 2025US 12,415,733 B2Icsip Pty Ltd
- Device and method for desulfurizing natural gas8 Oct 2024US 12,110,465 B2Knauf Gips KG
- Process to convert reduced sulfur species and water into hydrogen and sulfuric acid8 Oct 2024US 12,110,601 B2California Institute of Technology
- Plant and method for the purification of fumes and recovery of secondary raw material12 Feb 2026US 2026/0042062 A1Italcer S.P.A. Società Benefit
- Production of lithium chemicals and metallic lithium8 Jan 2026US 2026/0008682 A1Icsip Pty Ltd
- Production of lithium chemicals and metallic lithium8 Jan 2026US 2026/0008683 A1Icsip Pty Ltd
- Production of lithium chemicals and metallic lithium8 Jan 2026US 2026/0008684 A1Icsip Pty Ltd
- Production of lithium chemicals and metallic lithium8 Jan 2026US 2026/0008685 A1Icsip Pty Ltd
Most cited
By later US patents
- Method and means for exploiting fuel having high sulfur content66US 5,571,490 AOrmat, Inc. · 1996
- Hydrogen peroxide for flue gas desulfurization46US 5,674,459 AThe Babcock & Wilcox Company · 1997
- Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems38US 4,834,955 ANalco Chemical Company · 1989
- Economic recovery and utilization of boiler flue gas pollutants37US 5,061,467 AROM Industries Corporation · 1991
- Limestone-gypsum flue gas desulfurization process33US 4,487,784 ABabcock-Hitachi Kabushiki Kaisha · 1984