US2989482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic titanate piezoelectric composition and method for preparing same
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
2026-11-09 04:15
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/4684; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
THE METHOD OF PROMOTING CRYSTAL GROWTH AND POLARIZING A PIEZOELECTRIC CERAMIC TITANATE COMPRISING (A) FORMING A THICK PLASTIC HOMOGENEOUS SLURRY OF SUFFICIENT LIQUID POLYALKYLENE GLYCOL AND UNFIRED METALLIC PIEZOELECTRIC TITANATE SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH TITANATES, ZIRCONIUM TITANATE, LEAD TITANATE, AND COMBINATIONS THEREOF, AND ADDING TO SAID SLURRY AT LEAST ONE IONIC IMBALANCE PROMOTER SELECTED FROM THE GROUP CONSISTING OF H2SEO3, ZNO, TIO2, CUCL AND CUO, (B) REACTING IN AMOUNT OF FROM 1.01 TO 67% OF THE AMOUNT OF METALLIC TITANATE OF AN INORGANIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM HALIDES, LIOH, LI2S AND LI2TIO3 WITH SAID SLURRY, AND (C) SUBSEQUENTLY FIRING THE REACTION PRODUCT AT A TEMPERATURE IN THE RANGE OF ABOUT 2500* TO 3000* 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 |