US2721182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New piezo-electric ceramic material and process for making it
Assignee: Thales SA
•
Filing: 1953-09-21
•
Granted: 1955-10-18
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 Clement Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:01
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: 2
Claim 1
Independent Claim
36 words
CERAMIC PIEZOELECTRIC PRODUCT CONSISTING ESSENTIALLY OF BY MOLAR PERCENTAGE: PERCENT TITANIUM OXIDE 50 TO 22.5 BARIUM OXIDE 49.9 TO 22.5 STRONTIUM OXIDE 0 TO 35 LEAD OXIDE (PBO) 0 TO 10 GERMANIUM OXIDE 0.1 TO 10
Claim 2
Dependent Claim
36 words
CERAMIC PIEZOELECTRIC PRODUCT CONSISTING ESSENTIALLY OF BY MOLAR PERCENTAGE: PERCENT TITANIUM OXIDE 50 TO 22.5 BARIUM OXIDE 49.9 TO 22.5 STRONTIUM OXIDE 0 TO 35 LEAD OXIDE (PBO) 0 TO 10 GERMANIUM OXIDE 0.1 TO 10
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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |