Patent US3699044A successfully refreshed from Google Patents.
US3699044A
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US
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Preparation of ferroelectric ceramic compositions
Assignee: United States Atomic Energy Commission
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Filing: 1970-09-16
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Granted: 1972-10-17
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Expires: 1990-09-16
Abstract
Abstract PREPARATION OF FERROELECTRIC CERAMIC, REFRACTORY OXIDE, COMPOSITIONS BY MIXING A METAL ALKAOXIDE WITH A QUATERNARY AMMONIUM HYDROXIDE TO OBTAIN A SOLUTION CONTAINING A SOLUBLE METAL COMPLEX ION, THEREAFTER MIXING A METAL SALT WITH SAID SOLUTION TO FORM A PRECIPITATE, FILTERING THE PRECIPITATE AND CALCINING THE PRECIPITATE TO SAID REFRACTORY OXIDE COMPOSITION.
Inventors
- 👤 Robert G Dosch
- 👤 William M O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:20
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/50; C04B35/01; C04B35/46; C04B35/48; C04B35/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |