US2683100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolyesters and their use for electrical insulation
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1950-07-11
•
Granted: 1954-07-06
•
Expires: 1970-07-11
Abstract
No abstract record available.
Inventors
- 👤 Edgar Owen Burchell
- 👤 Jacob Basil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/422; H01B3/423; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/183; C08L; C08L67/00; C08L67/02; H01B3/307; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/3167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AN ELECTRICAL CONDUCTOR COATED WITH AN INSULATING FILM COMPRISING A COPOLYESTER MADE BY REACTING ETHYLENE GLYCOL WITH TEREPHTHALIC ACID AND A SATURATED STRAIGHT CHAIN ACID OF THE FORMULA
Claim 2
Dependent Claim
28 words
AN ELECTRICAL CONDUCTOR COATED WITH AN INSULATING FILM COMPRISING A COPOLYESTER MADE BY REACTING ETHYLENE GLYCOL WITH TEREPHTHALIC ACID AND A SATURATED STRAIGHT CHAIN ACID OF THE FORMULA
References Cited (Backward Citations)
US2071250A
Cited
US2349952A
Cited
US2465319A
Cited
US2437046A
Cited
US2443613A
Cited
US2454187A
Cited
US2462658A
Cited
GB610140A
Cited
GB623309A
Cited
US2579980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |