US3216943A
Expired / Lapsed
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Method of preparing lead titanate ferroelectric ceramics
Assignee: Clevite Corp
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Filing: 1963-01-15
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Granted: 1965-11-09
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Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 Jaffe Hans
- 👤 Gerson Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:24
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/51; H01; H01G; H01G7/00; H01G7/02; H01G7/025; H01G7/026; H10N30/8548; H10N30/8554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF PREPARING A LEAD ZIRCONATE TITANATE FERROELECTRIC CERAMIC MATERIAL WHICH COMPRISES HEATING THE MATERIAL AT A CERAMIC FIRING TEMPERATURE AND AT THE SAME TIME MAINTAINING IN THE IMMEDIATE VICINITY OF THE MATERIAL AN OXYGEN-DEFICIENT ATMOSPHERE CONSISTING ESSENTIALLY OF AN UNREACTIVE GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND ARGON.
Claim 2
Independent Claim
52 words
A METHOD OF PREPARING A LEAD ZIRCONATE TITANATE FERROELECTRIC CERAMIC MATERIAL WHICH COMPRISES HEATING THE MATERIAL AT A CERAMIC FIRING TEMPERATURE AND AT THE SAME TIME MAINTAINING IN THE IMMEDIATE VICINITY OF THE MATERIAL AN OXYGEN-DEFICIENT ATMOSPHERE CONSISTING ESSENTIALLY OF AN UNREACTIVE GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND ARGON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |