Patent US3397123A successfully refreshed from Google Patents.
US3397123A
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Purifying aqueous acid phosphate solutions containing fluorine impurities
Assignee: Hooker Chemical Corp
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Filing: 1965-06-03
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Granted: 1968-08-13
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jay A Cull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:12
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; Y; Y10; Y10S; Y10S159/00; Y10S159/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732192A
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US1833717A
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US2611681A
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US2977196A
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US2962357A
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GB864886A
Cited
US2995436A
Cited
US3104946A
Cited
GB911040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |