US2972176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed dielectric ceramic bodies
Assignee: Clevite Corp
•
Filing: 1956-02-15
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Granted: 1961-02-21
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Expires: 1976-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles K Gravley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; H01G7/025; H01G7/026; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H10; H10N; H10N30/00; H10N30/01; H10N30/09; H10N30/093; H10N30/097; H10N30/80; H10N30/85; H10N30/853; H10N30/8536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF FABRICATING THIN BODIES OF ELECTROMECHANICALLY SENSITIVE, POLYCRYSTALLINE, BARIUM TITANATE AND BARIUM TITANATE-BASED CERAMIC MATERIAL CONTAINING GLASS-FORMING CONSTITUENTS IN LESER QUANTITIES THAN WOULD EFFECTIVELY DESTROY THE ELECTROMECHANICAL SENSITIVITY OF THE MATERIAL, WHICH INCLUDES THE STEP OF COOLING SUCH BODIES, LESS THAN ABOUT 50 MILS THICK, AT A RATE OF ABOUT 200* TO 650*C. PER SECOND FROM A TEMPERATURE AT WHICH SAID CONSITUENTS ARE SOFTENED TO A TEMPERATURE BELOW ABOUT 600*C.
Claim 2
Independent Claim
72 words
A METHOD OF FABRICATING THIN BODIES OF ELECTROMECHANICALLY SENSITIVE, POLYCRYSTALLINE, BARIUM TITANATE AND BARIUM TITANATE-BASED CERAMIC MATERIAL CONTAINING GLASS-FORMING CONSTITUENTS IN LESER QUANTITIES THAN WOULD EFFECTIVELY DESTROY THE ELECTROMECHANICAL SENSITIVITY OF THE MATERIAL, WHICH INCLUDES THE STEP OF COOLING SUCH BODIES, LESS THAN ABOUT 50 MILS THICK, AT A RATE OF ABOUT 200* TO 650*C. PER SECOND FROM A TEMPERATURE AT WHICH SAID CONSITUENTS ARE SOFTENED TO A TEMPERATURE BELOW ABOUT 600*C.
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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) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |