C01B 25/2343
Concentration concomitant with purification
Official title: {Concentration concomitant with purification, e.g. elimination of fluorine}
C01B25/2343 (Concentration concomitant with purification) appears on 22 US grants and 6 published applications in this corpus.
Search patents in C01B- Granted patents
- 22
- Published applications
- 6
- Assignees
- 21
- Inventors
- 66
- Latest grant
- 8 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 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 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Scale control in phosphoric acid production and handling plants8 Jun 2021US 11,027,998 B2Ecolab USA Inc.
- Scale control in phosphoric acid production and handling plants10 Mar 2020US 10,584,049 B2Ecolab USA Inc.
- Method of phosphoric acid concentration20 Oct 1998US 5,824,132 A
- Defluorination of phosphoric acid17 May 1994US 5,312,610 AJ. R. Simplot Company
- Scale control in phosphoric acid manufacture9 Jun 1992US 5,120,519 ANalco Chemical Company
- Method for recovering valuable constituents from struvite6 Aug 2026US 2026/0225967 A1
- Method for producing high-purity phosphoric acid using quantum coupling of phosphoric acid18 Dec 2025US 2025/0382175 A1Ram Technology Co., Ltd.
- Method for preparing iron phosphate and by-product fertilizer using ammonium phosphate14 Dec 2023US 2023/0399230 A1Guizhou Batian Ecotypic Engineering Co., Ltd.
- Method of Recovering Phosphori Acid from Fermentation Broth of Fermentation Waste Liquor and Reusing the Same25 Mar 2021US 2021/0087060 A1Cj Cheiljedang Corporation
- Scale control in phosphoric acid production and handling plants11 Jun 2020US 2020/0180987 A1Ecolab USA Inc.
Most cited
By later US patents
- Method for intimate contacting of plural phases and phase contactor apparatus therefor20US 4,267,131 ARhone-Poulenc Industries · 1981
- Cyclonic entrainment separator for evaporator14US 4,375,386 AThe Badger Company, Inc. · 1983
- Process and installation for concentrating dilute solutions of corrosive products11US 3,970,511 ASociete Nationale des Poudres et Expolsifs, Antar Petroles de l'Atlantique: Antargaz · 1976
- Purification of wet process phosphoric acid11US 4,215,098 AAlbright & Wilson Limited · 1980
- Purification of wet process phosphoric acid11US 4,296,082 AAlbright & Wilson Limited · 1981