US3108162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor acousto-electric transducer and method of making the same
Assignee: Individual
•
Filing: 1960-04-11
•
Granted: 1963-10-22
•
Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Schindler Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:50
CPC Classifications
H; H04; H04R; H04R19/00; H04R19/01; Y; Y10; Y10T; Y10T29/00; Y10T29/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A CAPACITOR TRANSDUCER HAVING A FIXED PLATE AND A DIAPHRAGM, IN COMBINATION: A POROUS BODY OF RIGID DIELECTRIC MATERIAL HAVING A FLAT SURFACE BEARIANG THEREON A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL CONSTITUTING THE FIXED PLATE; AN ELECTRICALLY CONDUCTIVE DIAPHRAGM; AND MEANS MOUNTING SAID DIAPHRAGM IN SPACED PARALLEL RELATION WITH THE LAYER ON SAID SURFACE.
Claim 2
Dependent Claim
55 words
IN A CAPACITOR TRANSDUCER HAVING A FIXED PLATE AND A DIAPHRAGM, IN COMBINATION: A POROUS BODY OF RIGID DIELECTRIC MATERIAL HAVING A FLAT SURFACE BEARIANG THEREON A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL CONSTITUTING THE FIXED PLATE; AN ELECTRICALLY CONDUCTIVE DIAPHRAGM; AND MEANS MOUNTING SAID DIAPHRAGM IN SPACED PARALLEL RELATION WITH THE LAYER ON SAID SURFACE.
References Cited (Backward Citations)
US1678182A
Cited
US1650740A
Cited
US1648689A
Cited
GB438672A
Cited
US2403915A
Cited
US2444620A
Cited
GB832276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |