US3577487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of submicron sized alkaline earth titanate and zirconate powders
Assignee: WR Grace and Co
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Filing: 1968-05-22
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Granted: 1971-05-04
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Expires: 1988-05-22
Abstract
Abstract HIGHLY REACTIVE, HIGH PURITY, SUBMICRON SIZED ALKALINE EARTH TITANATES AND ZIRCONATES ARE PREPARED BY FIRST BLENDING HYDROXIDES, NITRATES, ETC. AND HYDROGELS AND THEN PASSING THE RESULTING PRODUCT THROUGH A FLUID ENERGY MILL.
Inventors
- 👤 Moises Gali Sanchez
- 👤 Newton Levy Jr
- 👤 Richard R Rettew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:40
CPC Classifications
B; B01; B01J; B01J37/00; B82; B82Y; B82Y30/00; C; C01; C01G; C01G23/00; C01G23/003; C01G23/006; C01G25/00; C01G25/006; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C01P; C01P2002/00; C01P2002/30; C01P2002/34; C01P2002/60; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2006/00; C01P2006/12
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |