US3560320A
Expired / Lapsed
US
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Insulating material
Assignee: General Electric Co
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Filing: 1967-10-05
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Granted: 1971-02-02
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Expires: 1987-10-05
Abstract
Abstract ELECTRICAL INSULATING MATERIAL IS BONDED TO REINFORCING BACKER MATERIAL IN THE PREPARATION OF ELECTRICAL INSULATING TAPES BY FUSED THERMOPLASTIC SHEET MATERIAL SUCH AS POLYETHYLENE, POLYPROPYLENE, POLYBUTYLENE, POLYSTYRENE, POLYVINYL ACETATE, POLYACRYLATE, CELLULOSE ACETATE, CELLULOSE ACETOBUTYRATE AND POLYVINYL ACETAL AND BLENDS THEREOF TO PROVIDE A POROUS IMPREGNATABLE STRUCTURE.
Inventors
- 👤 Henry A Letteron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:17
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/249981; Y10T428/249982; Y10T428/249985; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31652; Y10T442/00; Y10T442/30; Y10T442/3854; Y10T442/3862; Y10T442/387; Y10T442/3886
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |