C01B 25/2208
With an acid or a mixture of acids other than sulfuric acid
Official title: {with an acid or a mixture of acids other than sulfuric acid}
C01B25/2208 (With an acid or a mixture of acids other than sulfuric acid) appears on 21 US grants and 15 published applications in this corpus.
Search patents in C01B- Granted patents
- 21
- Published applications
- 15
- Assignees
- 16
- Inventors
- 41
- Latest grant
- 26 May 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing calcium sulfate26 May 2020US 10,662,072 B2Prayon Technologies
- Source of phosphate for agriculture and the food industry5 Nov 2019US 10,464,853 B2Ecophos S.A.
- Semiconductor nanoparticle assembly2 Dec 2014US 8,901,535 B2Konica Minolta Medical & Graphic, Inc.
- Process for the production of high purity phosphoric acid23 Apr 2013US 8,425,872 B2Ecophos S.A.
- Method for etching phosphate ores2 Nov 2010US 7,824,634 B2Ecophos S.A.
- Processing Of Phosphate Solutions6 Aug 2026US 2026/0225888 A1Easymining Sweden AB
- Method for producing phosphoric acid22 May 2025US 2025/0162870 A1
- Fertilizer and manufacturing method thereof22 May 2025US 2025/0162955 A1
- Sustainable plasma nitrophosphate process for production of nitrogen and phosphorous products and for carbon sequestration11 Jul 2024US 2024/0228287 A9Nitricity Inc.
- Sustainable plasma nitrophosphate process for production of nitrogen and phosphorous products and for carbon sequestration25 Apr 2024US 2024/0132354 A1Nitricity Inc.
Most cited
By later US patents
- Method for manufacture of phosphoric acid from phosphate rock11US 4,108,957 A1978
- Cleaning of filter surfaces11US 4,857,211 ARhone-Poulenc Chimie · 1989
- Production of phosphoric acid6US 4,557,915 ARhone-Poulenc Chimie de Base · 1985
- Process for the production of phosphoric acid and calcium fluoride6US 5,531,975 APhosphate Engineering & Construction Co., Inc. · 1996
- Process for the production of phosphoric acid and hydrogen fluoride from phosphate rock and fluosilicic acid5US 5,180,569 APhosphate Engineering & Construction Co., Inc. · 1993