US3386892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of fluosilicic acid solution by distillation with phosphoric acid solution
Assignee: Patheon Austria GmbH and Co KG
•
Filing: 1966-06-22
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Granted: 1968-06-04
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Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Alfred
- 👤 Muller Walter
- 👤 Weinrotter Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/48; C; C01; C01B; C01B33/00; C01B33/08; C01B33/10; C01B33/103; C07; C07D; C07D471/00; C07D471/02; C07D471/04; G; G03; G03C; G03C1/00; G03C1/005; G03C1/49; G03C1/52; G03C1/64; G03C1/705; G03C5/00; G03C5/56; G03G; G03G5/00; G03G5/153; G03G9/00; G03G9/08; G03G9/09; G03G9/0926; Y; Y10; Y10S; Y10S159/00; Y10S159/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3273713A
Cited
US2369791A
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US2611681A
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US2728634A
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GB774319A
Cited
US3091513A
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US3256062A
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US3258308A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |