US2688569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulated coils and method of making same
Assignee: AT&T Inc
•
Filing: 1951-08-21
•
Granted: 1954-09-07
•
Expires: 1971-08-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Malone
- 👤 Franklin B Rinck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:18
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/022; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF COATING AN ELECTRICAL DEVICE INCLUDING A COIL, COMPRISING IMPREGNATING SAID COIL WITH A SOLVENT-TYPE INSULATING COMPOUND CHEMICALLY INERT WITH RESPECT TO SAID COIL, SETTING SAID COMPOUND, THEN PROVIDING SAID COIL WITH A TOUGH, IMPERVIOUS, FLEXIBLE COATING BY IMPREGNATING SAID COIL WITH A SOLVENTLESS, FLUID, UNPOLYMERIZED, POLYMERIZABLE COMPOUND CORROSIVE TO SAID COIL IF IN DIRECT CONTACT THEREWITH, AND POLYMERIZING SAID SOLVENTLESS COIL TO FORM SAID TOUGH FLEXIBLE COATING.
Claim 2
Independent Claim
70 words
THE METHOD OF COATING AN ELECTRICAL DEVICE INCLUDING A COIL, COMPRISING IMPREGNATING SAID COIL WITH A SOLVENT-TYPE INSULATING COMPOUND CHEMICALLY INERT WITH RESPECT TO SAID COIL, SETTING SAID COMPOUND, THEN PROVIDING SAID COIL WITH A TOUGH, IMPERVIOUS, FLEXIBLE COATING BY IMPREGNATING SAID COIL WITH A SOLVENTLESS, FLUID, UNPOLYMERIZED, POLYMERIZABLE COMPOUND CORROSIVE TO SAID COIL IF IN DIRECT CONTACT THEREWITH, AND POLYMERIZING SAID SOLVENTLESS COIL TO FORM SAID TOUGH FLEXIBLE COATING.
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) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |