Patent US2906973A successfully refreshed from Google Patents.
US2906973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostrictive ceramics comprising a principal component of barium titanate
Assignee: AT&T Inc
•
Filing: 1953-04-29
•
Granted: 1959-09-29
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Warren P Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:02
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/58; H03H9/60; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/4684; H03H9/56; H03H9/562; H03H9/581; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; H10N30/8536
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2467169A
Cited
GB574577A
Cited
US2399082A
Cited
US2402515A
Cited
US2616989A
Cited
US2538554A
Cited
US2540412A
Cited
US2614144A
Cited
US2742370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |