C01B 7/193
Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates
Official title: {Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates}
C01B7/193 (Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates) appears on 21 US grants and 8 published applications in this corpus.
Search patents in C01B- Granted patents
- 21
- Published applications
- 8
- Assignees
- 15
- Inventors
- 43
- Latest grant
- 28 Apr 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
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| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
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| 1983 | 1 | 0 |
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| 2007 | 1 | 1 |
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| 2022 | 0 | 1 |
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| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for processing hexafluorosilicic acid to produce hydrogen fluoride28 Apr 2026US 12,612,307 B2Obschestvo S Ogranichennoj Otvetstvennostju “Novye Khimicheskie Produkti”
- Gas nozzle, gas reaction device and gas hydrolysis reaction method10 Dec 2024US 12,162,771 B2Guangzhou Huifu Research Institute Co., Ltd.
- Method for assaying elements in a substrate for optics, electronics, or optoelectronics16 Jan 2007US 7,163,897 B2S. O. I. Tec Silicon on Insulator Technologies
- Production of fumed silica17 Apr 2001US 6,217,840 B1Goldendale Aluminum Company
- Method of recovering fumed silica from spent potliner27 Feb 2001US 6,193,944 B1Goldendale Aluminum Company
- Gas nozzle, gas reaction device and gas hydrolysis reaction method30 Jun 2022US 2022/0204341 A1Guangzhou Huifu Research Institute Co., Ltd.
- Method for processing hexafluorosilicic acid to produce hydrogen fluoride23 Dec 2021US 2021/0395086 A1Obschestvo S Ogranichennoj Otvetstvennostju “Novye Khimicheskie Produkti”
- Method for producing hydrogen fluoride from an aqueous solution of hexafluorosilicic acid28 Oct 2021US 2021/0331920 A1New Chemical Products LLC
- Method for producing hydrogen fluoride from hexafluorosilicic acid16 Sep 2021US 2021/0284532 A1New Chemical Products LLC
- Apparatus and method for manufacturing halogen gas and halogen gas recovery and circulatory system22 Oct 2009US 2009/0260974 A1
Most cited
By later US patents
- Process for the recovery of anhydrous hydrogen fluoride from aqueous solutions of fluosilicic acid and hydrogen fluoride17US 4,389,293 AAllied Corporation · 1983
- Process for producing fluorine compounds and amorphous silica11US 4,308,244 AOccidental Research Corporation · 1981
- Method of producing hydrogen fluoride and silicon dioxide from silicon tetra-fluoride10US 4,206,189 A1980
- Process and apparatus for preparing finely-divided silicon dioxide having good thixotropic properties10US 4,559,218 A1985
- Recovery of hydrofluoric acid from fluosilicic acid with high pH hydrolysis8US 4,213,952 AOccidental Research Corporation · 1980