C01B 25/301
Preparation from liquid orthophosphoric acid or from an acid solution or suspension
Official title: {Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates}
C01B25/301 (Preparation from liquid orthophosphoric acid or from an acid solution or suspension) appears on 47 US grants and 25 published applications in this corpus.
Search patents in C01B- Granted patents
- 47
- Published applications
- 25
- Assignees
- 37
- Inventors
- 125
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 1 |
| 2023 | 1 | 4 |
| 2024 | 1 | 4 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for the high efficiency recycling of iron phosphate black powder slag25 Nov 2025US 12,479,726 B2
- Method for recovering lithium from a waste lithium secondary battery using a pyrometallugical process15 Jul 2025US 12,359,280 B2Young Poong Corporation
- Method for producing high-purity aqueous lithium salt solution6 May 2025US 12,294,053 B2Asaka Riken Co., Ltd.
- Lithium metal phosphate electrode manufacturing30 Apr 2024US 11,973,225 B2Rivian IP Holdings, LLC
- Preparation process of food-grade potassium dihydrogen phosphate21 Feb 2023US 11,584,647 B2Wengfu Dazhou Chemical Co., Ltd.
- A method for recovery of lithium13 Aug 2026US 2026/0233998 A1Northvolt Revolt AB
- Method for recovering high-efficiency lithium from low-concentration lithium waste liquid and lithium carbonate produced thereby30 Apr 2026US 2026/0116755 A1Korea Institute of Geoscience and Mineral Resources
- Composite cathode material and method for preparing the same, lithium ion battery30 Jan 2025US 2025/0038193 A1BTR Nano Tech Co., Ltd.
- Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product26 Dec 2024US 2024/0425381 A1Frontier Lithium Inc.
- Method for recovering lithium from a waste lithium secondary battery using a pyrometallugical process27 Jun 2024US 2024/0209474 A1Young Poong Corporation
Most cited
By later US patents
- Removal of fluorine from phosphatic solutions20US 4,053,561 AStauffer Chemical Company · 1977
- Manufacturing method of high purity lithium phosphate from the waste liquid of the exhausted lithium-ion battery16US 10,056,656 B2KANGWON NATIONAL UNIVERSITY University-Industry Cooperation Foundation · 2018
- Preparation of phosphates15US 3,956,464 APennzoil Company · 1976
- Food grade alkali metal phosphates from wet process H.sub.3 PO.sub.413US 3,993,733 AStauffer Chemical Company · 1976
- Method of producing fluoride-free phosphoric acid8US 4,055,626 APennzoil Company · 1977