C01B 25/321
Methods for converting an alkaline earth metal ortho-phosphate into another ortho-phosphate
Official title: {Methods for converting an alkaline earth metal ortho-phosphate into another ortho-phosphate (by reaction, e.g. of phosphate rock with phosphoric acid C01B25/322)}
C01B25/321 (Methods for converting an alkaline earth metal ortho-phosphate into another ortho-phosphate) appears on 31 US grants and 14 published applications in this corpus.
Search patents in C01B- Granted patents
- 31
- Published applications
- 14
- Assignees
- 12
- Inventors
- 64
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 3 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 3 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two-step method to produce monocalcium phosphates from lime softening water plant residuals18 Nov 2025US 12,473,202 B1
- Phosphate-containing anti-corrosive pigment23 Sep 2025US 12,421,116 B2Chemische Fabrik Budenheim KG
- Method to make phosphoric acid and ammonium phosphates from phosphate minerals8 Jul 2025US 12,351,456 B2Wisconsin Alumni Research Foundation
- Method for producing a calcium phosphate salt24 Jan 2023US 11,560,310 B1Jesa Technologies LLC
- Method to make phosphoric acid and ammonium phosphates from phosphate minerals8 Jun 2021US 11,027,975 B2Wisconsin Alumni Research Foundation
- Method to make phosphoric acid and ammonium phosphates from phosphate mineral23 Apr 2026US 2026/0109602 A1Wisconsin Alumni Research Foundation
- Phosphate-containing anti-corrosive pigment21 Aug 2025US 2025/0263298 A1Chemische Fabrik Budenheim KG
- Apatite for filler and filler composition comprising same10 Apr 2025US 2025/0114281 A1Korea Institute of Science and Technology
- Method to make phosphoric acid and ammonium phosphates from phosphate minerals23 Sep 2021US 2021/0292169 A1Wisconsin Alumni Research Foundation
- Method of constructs fabrication from calcium phosphates29 Apr 2021US 2021/0122635 A1Vivax Bio, LLC
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