C01B 33/103
Fluosilicic acid
Official title: {Fluosilicic acid; Salts thereof}
C01B33/103 (Fluosilicic acid) appears on 35 US grants and 15 published applications in this corpus.
Search patents in C01B- Granted patents
- 35
- Published applications
- 15
- Assignees
- 26
- Inventors
- 90
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 0 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid dispersion of fluoride particles and method for producing same, and optical film23 Sep 2025US 12,422,591 B2Stella Chemifa Corporation
- Method for producing fluoride phosphor20 May 2025US 12,305,100 B2Nichia Corporation
- Method for producing fluoride fluorescent material8 Oct 2024US 12,110,432 B2Nichia Corporation
- Red phosphor and method for producing same23 Apr 2024US 11,965,123 B2Stella Chemifa Corporation
- Process for reducing the concentration of arsenic in an aqueous solution comprising a fluoroacid2 May 2023US 11,639,302 B2Mexichem Fluor S.A. De C.V.
- Red-emitting phosphors having small particle size, processes for preparing and devices thereof13 Nov 2025US 2025/0346807 A1
- Phosphor compositions and devices thereof11 Sep 2025US 2025/0282993 A1
- Method for producing fluoride fluorescent material11 May 2023US 2023/0142024 A1Nichia Corporation
- Liquid dispersion of fluoride particles and method for producing same, and optical film9 Feb 2023US 2023/0038554 A1Stella Chemifa Corporation
- Method for producing fluoride phosphor19 Jan 2023US 2023/0018663 A1Nichia Corporation
Most cited
By later US patents
- Method of precipitating radium to yield high purity calcium sulfate from phosphate ores28US 3,949,047 AGebr. Giulini GmbH · 1976
- Process for producing high-purity silica by reacting crude silica with ammonium fluoride28US 5,458,864 ANissan Chemical Industries, Ltd. · 1995
- Process for producing high-purity silica by reacting crude silica with ammonium fluoride23US 5,266,289 ANissan Chemical Industries, Ltd. · 1993
- Process of refining sodium hexafluorosilicate containing gypsum18US 4,160,012 ACentral Glass Company, Limited · 1979
- Process of refining sodium hexafluorosilicate17US 4,161,511 ACentral Glass Company, Limited · 1979