Patent US3449072A successfully refreshed from Google Patents.
US3449072A
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Synthesis of finely divided oxide powders
Assignee: KEMIRA Inc A GA CORP
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Filing: 1967-07-27
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Granted: 1969-06-10
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Expires: 1987-07-27
Abstract
No abstract record available.
Inventors
- 👤 Mark Phillips Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:55
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; B; B82; B82Y; B82Y30/00; C01B13/00; C01B13/14; C01B13/20; C01B13/22; C01B13/28; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/181; C01B33/183; C01B35/08; C01B35/10; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2347496A
Cited
US2791490A
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US3051639A
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US3235332A
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US3253886A
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US3275411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |