Patent US2857532A successfully refreshed from Google Patents.
US2857532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric crystal unit
Assignee: AT&T Inc
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Filing: 1956-08-29
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Granted: 1958-10-21
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Expires: 1976-08-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:13
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; H01G7/021; G; G11; G11C; G11C11/00; G11C11/21; G11C11/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN ELECTRICAL STORAGE UNIT COMPRISING IN COMBINATION A FERROELECTRIC CRYSTAL, ELECTRICAL CONDUCTING MEANS APPLIED TO OPPOSITE SURFACES OF SAID FERROELECTRICA CRYSCOVERING THE EXPOSED SURFACES OF SAID FERROELECTRC CRYSTAL AND SAID ELECTRICAL CONDUCTING MEANS, SAID COATING COMPRISING AN ORGANIC WAX WHICH IS DERIVED FROM A PROCESS WHEREIN PETROLATUM IS SUBJECTED TO THERMAL DECOMPOESS WHEREIN PERROLATUM IS SUBJECTED TO THERMAL DECOMPOSITION COMPRISING VAPORIZATION OF SAID PETRALATUM AT A TEMPERATURE BETWEEN 100 AND 300 DEGREES CENTRIGRADE, AND THE RESIDUAL PASTE COMPRISING ABOUT 90 PERCENT OF THE CONDENSATE OF SAID VAPORIZATION AT THE HIGHER TEMEPERATURES IN SAID RANGE IS PRESSED THROUGH A FILTER.
Claim 2
Dependent Claim
99 words
AN ELECTRICAL STORAGE UNIT COMPRISING IN COMBINATION A FERROELECTRIC CRYSTAL, ELECTRICAL CONDUCTING MEANS APPLIED TO OPPOSITE SURFACES OF SAID FERROELECTRICA CRYSCOVERING THE EXPOSED SURFACES OF SAID FERROELECTRC CRYSTAL AND SAID ELECTRICAL CONDUCTING MEANS, SAID COATING COMPRISING AN ORGANIC WAX WHICH IS DERIVED FROM A PROCESS WHEREIN PETROLATUM IS SUBJECTED TO THERMAL DECOMPOESS WHEREIN PERROLATUM IS SUBJECTED TO THERMAL DECOMPOSITION COMPRISING VAPORIZATION OF SAID PETRALATUM AT A TEMPERATURE BETWEEN 100 AND 300 DEGREES CENTRIGRADE, AND THE RESIDUAL PASTE COMPRISING ABOUT 90 PERCENT OF THE CONDENSATE OF SAID VAPORIZATION AT THE HIGHER TEMEPERATURES IN SAID RANGE IS PRESSED THROUGH A FILTER.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |