US3684714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic bodies for electromechanical transducers
Assignee: US Philips Corp
•
Filing: 1970-10-08
•
Granted: 1972-08-15
•
Expires: 1990-10-08
Abstract
Abstract WHEREIN 0.55$X$0.62 AND (0.3X-O.118)$X$(0.3X-0.094) PB1-1.5YLAY(ZRXTI-X)O3 CERAMIC BODIES FOR USE IN ELECTROMECHANICAL TRANSDUCERS CONSISTING MOSTLY OF LANTHANUM OXIDE CONTAINING SOLID SOLUTIONS OF LEAD ZIRCONATE AND LEAD TITANATE HAVING A COMPOSITION DEFINED BY THE FORMULA
Inventors
- 👤 Klaus Fredrich Leonhard Carl
- 👤 Karl Heinz Hardtl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/50; C04B35/01; C04B35/46; C04B35/48; C04B35/51
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |