Patent US4385521A successfully refreshed from Google Patents.
US3968463A
Expired / Lapsed
US
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Coaxial cable with improved properties
Assignee: Union Carbide Corp
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Filing: 1974-07-24
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Granted: 1976-07-06
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Expires: 1994-07-24
Abstract
Abstract A coaxial cable having improved mechanical and electrical properties comprising an inner conductor; an outer inert gas blown cellular ethylene or propylene polymer dielectric layer having in unexpanded form a density of about 0.86 to 0.96 grams per cubic centimeter, a melt index of about 0.05 to 10 decigrams per minute and an expanded density up to 0.6 grams per cubic centimeter, said core member having a dissipation factor value of </= 250 microradians at an electrical transmission frequency range of from 50 to 300 mega Hertz; and an outer coaxial conductor.
Inventors
- 👤 Robert L. Boysen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/14; H01B11/00; H01B11/18; H01B11/1834; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A coaxial cable having improved mechanical and electrical properties comprising an inner conductor; an outer inert gas blown cellular ethylene or propylene polymer dielectric layer having in unexpanded form a density of about 0.86 to 0.96 grams per cubic centimeter, a melt index of about 0.05 to 10 decigrams per minute and an expanded density up to 0.6 grams per cubic centimeter, and dielectric layer having a dissipation factor value of ≦250 microradians at an electrical transmission frequency range of from 50 to 300 mega Hertz; and an outer coaxial conductor.
Claim 2
Dependent Claim
91 words
A coaxial cable having improved mechanical and electrical properties comprising an inner conductor; an outer inert gas blown cellular ethylene or propylene polymer dielectric layer having in unexpanded form a density of about 0.86 to 0.96 grams per cubic centimeter, a melt index of about 0.05 to 10 decigrams per minute and an expanded density up to 0.6 grams per cubic centimeter, and dielectric layer having a dissipation factor value of ≦250 microradians at an electrical transmission frequency range of from 50 to 300 mega Hertz; and an outer coaxial conductor.
Claim 3
Dependent Claim
25 words
A coaxial cable as claimed in claim 1, having a dissipation factor value of ≦150 microradians at an electrical transmission frequency of 211 mega Hertz.
Claim 4
Dependent Claim
25 words
A coaxial cable as claimed in claim 1, having a dissipation factor value of ≦200 microradians at an electrical transmission frequency of 300 mega Hertz.
Claim 5
Dependent Claim
17 words
A coaxial cable as claimed in claim 1, wherein said ethylene or propylene polymer is a homopolymer.
Claim 6
Dependent Claim
48 words
A coaxial cable core member as claimed in claim 1, wherein said polymer of said dielectric layer contains, as the base polymer component, 98.0 to 99.98% by weight ethylene or propylene polymer, 0.1 to 1.0% by weight of nucleating agent and 0.01 to 1.0% by weight of antioxidant.
References Cited (Backward Citations)
US2948020A
Cited
US2818905A
Cited
US2960482A
Cited
US3068532A
Cited
US3072972A
Cited
US3254139A
Cited
US3516859A
Cited
US3404104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |