US4064075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive, extrudable polymer composition of poly(ε-caproamide) and carbon black
Assignee: EIDP Inc
•
Filing: 1972-08-11
•
Granted: 1977-12-20
•
Expires: 1992-08-11
Abstract
Abstract Highly conductive, extrudable compositions of poly( epsilon -caproamide) and electrically conductive carbon black.
Inventors
- 👤 Donald Robert Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:28
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; Y; Y10; Y10S; Y10S57/00; Y10S57/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
Highly conductive, extrudable polymer composition having a specific resistance of less than 200 ohm-centimeter consisting essentially of poly (ε-caproamide) containing from about 16 to about 28% by weight based on the weight of the composition of an electrically conductive carbon black.
Claim 2
Dependent Claim
41 words
Highly conductive, extrudable polymer composition having a specific resistance of less than 200 ohm-centimeter consisting essentially of poly (ε-caproamide) containing from about 16 to about 28% by weight based on the weight of the composition of an electrically conductive carbon black.
Claim 3
Dependent Claim
21 words
The product of claim 1 wherein the carbon black is present in the range of between 17 and 23% by weight.
Claim 4
Dependent Claim
21 words
A highly conductive filament having a resistance of less than 10 9 ohms per cm. of the composition of claim 1.
Claim 5
Dependent Claim
13 words
A filament according to claim 3 that has been drawn at least 2.0×.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |