US2526688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing electrical condensers
Assignee: Sprague Electric Co
•
Filing: 1946-12-28
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Granted: 1950-10-24
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Expires: 1966-12-28
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
- 👤 Denis Harold J St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:37
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS OF PRODUCING A RIGIDLY ENCASED, CONVOLUTELY WOUND ELECTRICAL CONDENSER, WHICH COMPRISES HEAT AND PRESSURE MOLDING A THERMOSETTING RESIN ABOUT AN UNIMPREGNATED, ROLLED CONDENSER SECTION, WHOSE DIELECTRIC SPACER MATERIAL CONTAINS BETWEEN ABOUT 5% AND ABOUT 17% BY WEIGHT OF MOISTURE, DRYING THE MOLDED UNIT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE THEREFROM, AND THEN IMPREGNATING THE DRIED UNIT WITH A LIQUID DIELECTRIC MATERIAL.
Claim 2
Dependent Claim
64 words
A PROCESS OF PRODUCING A RIGIDLY ENCASED, CONVOLUTELY WOUND ELECTRICAL CONDENSER, WHICH COMPRISES HEAT AND PRESSURE MOLDING A THERMOSETTING RESIN ABOUT AN UNIMPREGNATED, ROLLED CONDENSER SECTION, WHOSE DIELECTRIC SPACER MATERIAL CONTAINS BETWEEN ABOUT 5% AND ABOUT 17% BY WEIGHT OF MOISTURE, DRYING THE MOLDED UNIT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE THEREFROM, AND THEN IMPREGNATING THE DRIED UNIT WITH A LIQUID DIELECTRIC MATERIAL.
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) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |