C01D 9/16
Purification
C01D9/16 (Purification) appears on 9 US grants and 5 published applications in this corpus.
Search patents in C01D- Granted patents
- 9
- Published applications
- 5
- Assignees
- 8
- Inventors
- 21
- Latest grant
- 17 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 1 | 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 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Industrial waste salt resourceful treatment method and device17 May 2022US 11,332,379 B2Go Higher Environment Group Co., Ltd.
- Method and apparatus for sequencing-batch purification of potassium nitrate from solid waste produced by glass-strengthening process17 Feb 2015US 8,956,424 B2National Formosa University
- Method for pelleting spherical fine particle of sodium nitrate18 Jun 2013US 8,465,680 B2
- Process for producing high-purity potassium salts14 Aug 2001US 6,274,105 B1Avebe B.A.
- Process for obtaining potassium nitrate from potassium chloride and nitric acid26 May 1987US 4,668,495 AUnion Explosivos Rio Tinto, S.A.
- Method for comprehensive utilization of ulexite ore resources3 Sep 2026US 2026/0257927 A1Fujian Jungie New Material Technology Co., Ltd.
- Purification method for landfill leachate30 Nov 2023US 2023/0382768 A1Cool Separations B.V.
- Industrial waste salt resourceful treatment method and device11 Nov 2021US 2021/0347649 A1Go Higher Environment Group Co., Ltd.
- Method and apparatus for sequencing-batch purification of potassium nitrate from solid waste produced by glass-strengthening process5 Dec 2013US 2013/0323156 A1National Formosa University
- Method for pelleting spherical fine particle of sodium nitrate26 Apr 2012US 2012/0098151 A1
Most cited
By later US patents
- Method and apparatus for sequencing-batch purification of potassium nitrate from solid waste produced by glass-strengthening process6US 8,956,424 B2National Formosa University · 2015
- Nonaqueous purification of mixed nitrate heat transfer media5US 4,421,662 AOlin Corporation · 1983
- Process for producing high-purity potassium salts5US 6,274,105 B1Avebe B.A. · 2001
- Alkali metal nitrate purification2US 4,568,352 AOlin Corporation · 1986
- Purification of alkali metal nitrates1US 4,517,164 AOlin Corporation · 1985