US2989481A
Expired / Lapsed
US
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Plastic titanate piezoelectric composition
Assignee: Ambac International Corp
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Filing: 1958-11-04
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Granted: 1961-06-20
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Expires: 1978-11-04
Abstract
No abstract record available.
Inventors
- 👤 Walter S Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:51
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/4684
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
THE METHOD OF PRODUCING AN UNFIRED PIEZOELECTRIC TITANATE PLASTIC MASS WHICH COMPRISES (A) BLENDING AN UNFIRED PEROVSKITE PIEZOELECTRIC METALLIC TITANATE SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH TITANATES, ZIRCONIUM TITANATE, LEAD TITANATE, AND COMBINATIONS THEREOF WITH A LIQUID POLYALKYLENE GLYCOL SUFFICIENT TO YIELD A STIFF, VISCOUS SLURRY AND (B) POLARIZING THE PARTIALLY REDUCING SAID TITANATE BY SUBSEQUENTLY ADDING TO SAID SLURRY FROM 1 TO 67% OF THE AMOUNT OF METALLIC TITANATE AN INORGANIC CHEMICAL COMPONENT CONTAINING LITHIUM IONS SELECTED FROM THE GROUP CONSISTING OF LITHIUM HALIDES, LI2S AND LIOH TO ELEVATE THE TEMPERATURE OF THE SLURRY WITHIN THE RANGE OF ABOUT 140*-230* F.
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |