C01F 11/462
Sulfates of sr or ba
Official title: {Sulfates of Sr or Ba}
C01F11/462 (Sulfates of sr or ba) appears on 68 US grants and 74 published applications in this corpus.
Search patents in C01F- Granted patents
- 68
- Published applications
- 74
- Assignees
- 57
- Inventors
- 211
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 6 |
| 2005 | 2 | 1 |
| 2006 | 2 | 4 |
| 2007 | 3 | 3 |
| 2008 | 3 | 5 |
| 2009 | 2 | 2 |
| 2010 | 3 | 2 |
| 2011 | 2 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 1 |
| 2015 | 0 | 4 |
| 2016 | 1 | 2 |
| 2017 | 2 | 5 |
| 2018 | 2 | 4 |
| 2019 | 6 | 8 |
| 2020 | 6 | 4 |
| 2021 | 2 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 1 |
| 2024 | 2 | 5 |
| 2025 | 4 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for carbon dioxide storage utilizing carbon dioxide sequestration in an anhydrite-rich formation4 Nov 2025US 12,460,513 B1King Fahd University of Petroleum and Minerals
- Production of strontium sulfate and strontium carbonate from brines30 Sep 2025US 12,428,308 B2
- Method of refining and recovering barium sulfate from contaminated water sources15 Jul 2025US 12,358,818 B2
- Lithium recovery and purification24 Jun 2025US 12,338,510 B2AG Hydrometallurgy Services Inc.
- Method for obtaining concentrated brine of minimum impurity content from brine found in natural salt flats and salt marshes, said method having minimum environmental impact and maximum lithium recovery5 Mar 2024US 11,920,211 B2
- Solid-solid separation of carbon from a hardly soluble alkaline earth sulfate2 Apr 2026US 2026/0094889 A1BASF SE
- Spherical composite particles of barium sulfate and silica, and production method therefor26 Jun 2025US 2025/0205123 A1Sakai Chemical Industry Co., Ltd.
- Process to produce battery grade lithium hydroxide monohydrate with low content of carbonate13 Mar 2025US 2025/0083969 A1
- Method And Apparatus For Removing A Target Substance From A Gas27 Feb 2025US 2025/0065268 A1Verdus Technologies PTE. LTD.
- Method for recovering metals from lithium ion battery waste6 Feb 2025US 2025/0043386 A1JX Metals Corporation
Most cited
By later US patents
- Multiple stream high pressure mixer/reactor106US 6,221,332 B1Microfluidics International Corporation · 2001
- Process for the preparation of barium sulfate of increased flowability and density, suitable as a radio-opaque component in radiographic contrast agents, product obtained according to this process and the radiographic contrast agent produced therefrom52US 4,588,574 ABracco Industria Chimica S.p.A. · 1986
- Recovery of lithium compounds from brines45US 6,207,126 B1Chemetall Foote Corporation · 2001
- Use of multiple stream high pressure mixer/reactor43US 6,159,442 AMFIC Corporation · 2000
- Inorganic particles35US 5,064,718 AImperial Chemical Industries PLC · 1991