US2759241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezo-electric devices
Assignee: —
•
Filing: —
•
Granted: 1956-08-21
•
Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:48
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/01; H10N30/08; H10N30/085; H10N30/086; H10N30/02; H10N30/07; H10N30/072; H10N30/073; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF MAKING A PIEZO-ELECTRIC ASSEMBLY WHICH COMPRISES WORKING A SURFACE OF EACH OF AT LEAST TWO PIEZOELECTRIC MEMBERS, APPLYING AN ELECTRODE TO EACH OF SAID WORKED SURFACES, APPLYING TO EACH SAID MEMBER AT LEAST OVER SAID ELECTRODE A COATING MATERIAL, SECURING EACH SAID COATED MEMBER PERMANENTLY TO A SUPPORTING SHEET OF FLEXIBLE MATERIAL HOLDING SAID SHEET FLAT AGAINST DISPLACEMENT.
Claim 2
Independent Claim
61 words
A METHOD OF MAKING A PIEZO-ELECTRIC ASSEMBLY WHICH COMPRISES WORKING A SURFACE OF EACH OF AT LEAST TWO PIEZOELECTRIC MEMBERS, APPLYING AN ELECTRODE TO EACH OF SAID WORKED SURFACES, APPLYING TO EACH SAID MEMBER AT LEAST OVER SAID ELECTRODE A COATING MATERIAL, SECURING EACH SAID COATED MEMBER PERMANENTLY TO A SUPPORTING SHEET OF FLEXIBLE MATERIAL HOLDING SAID SHEET FLAT AGAINST DISPLACEMENT.
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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |