C01B 35/109
Purification
Official title: {Purification; Separation; Concentration}
C01B35/109 (Purification) appears on 10 US grants and 4 published applications in this corpus.
Search patents in C01B- Granted patents
- 10
- Published applications
- 4
- Assignees
- 11
- Inventors
- 32
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for converting and separating at least one reactant and a reaction product thereof2 Dec 2025US 12,485,400 B2Vito NV
- System and method for extracting boric acid from a boron solution26 Nov 2024US 12,151,943 B1
- Purification of boric acid with ion exchange process19 Sep 2023US 11,760,648 B2Tubitak
- Method for producing pure boric acid28 Jan 1992US 5,084,260 ASocieta Chimica Larderello S.p.A.
- Production of lithium metal grade lithium chloride from lithium-containing brine25 Dec 1990US 4,980,136 ACyprus Foote Mineral Company
- Method for comprehensive utilization of ulexite ore resources3 Sep 2026US 2026/0257927 A1Fujian Jungie New Material Technology Co., Ltd.
- Boric Acid Purification Process1 May 2025US 2025/0136456 A1U. S. Borax Inc.
- A device and method for converting and separating at least one reactant and a reaction product thereof18 May 2023US 2023/0149880 A1Vito NV
- Purification of boric acid with ion exchange process31 Dec 2020US 2020/0407233 A1Tubitak
Most cited
By later US patents
- Production of lithium metal grade lithium chloride from lithium-containing brine31US 4,980,136 ACyprus Foote Mineral Company · 1990
- Method of recovering boric acid from waste-water concentrates of nuclear plants6US 4,435,184 ARheinisch-Westfalisches Elektrizitatswerk AG · 1984
- Separation of boric acid from mixtures thereof with sulphuric acid4US 4,394,364 ASandoz Ltd. · 1983
- Recovery of boron from waste streams3US 4,183,904 AMonsanto Company · 1980
- Process for the treatment of a waste liquid containing boron compounds and organic compounds3US 4,285,820 ANittetu Chemical Engineering Ltd. · 1981