US4361507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable filler composition containing (a) crystalline polypropylene homopolymer, (b) styrene block copolymer and (c) mineral oil
Assignee: Atlantic Richfield Co
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Filing: 1980-10-20
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Granted: 1982-11-30
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Expires: 2000-10-20
Abstract
Abstract A cable filler composition comprises a mixture of a mineral oil, a styrene-ethylene-butylene-stryene block copolymer and 2 to 6 weight percent of an isotactic, crystalline polypropylene, the polypropylene having an average molecular weight of between 20,000 and 50,000.
Inventors
- 👤 Larry G. Bourland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; C; C08; C08L; C08L53/00; C08L53/02; C08L53/025; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
In a cable filling composition for use in water-proofing electrical cables wherein a thermoplastic polymer is admixed with a styrene-ethylene butylene-styrene block copolymer and mineral oil in an amount of 87-91 percent by weight of said composition, the improvement wherein said thermoplastic polymer comprises an isotactic, crystalline, polypropylene homopolymer having an average molecular weight of between 20,000 and 50,000.
Claim 2
Dependent Claim
59 words
In a cable filling composition for use in water-proofing electrical cables wherein a thermoplastic polymer is admixed with a styrene-ethylene butylene-styrene block copolymer and mineral oil in an amount of 87-91 percent by weight of said composition, the improvement wherein said thermoplastic polymer comprises an isotactic, crystalline, polypropylene homopolymer having an average molecular weight of between 20,000 and 50,000.
Claim 3
Dependent Claim
37 words
In a cable filling composition for use in water-proofing electrical cables as defined in claim 1, the improvement wherein said styrene-ethylene butylene-styrene block copolymer is present in an amount of 5-7 percent by weight of said composition.
Claim 4
Dependent Claim
36 words
In a cable filling composition for use in water-proofing electrical cables as defined in claim 1, the improvement wherein said isotactic, crystalline, polypropylene is present in an amount of 2-6 percent by weight of said composition.
Claim 5
Dependent Claim
76 words
In a cable filling composition for use in water-proofing electrical cables wherein a thermoplastic polymer is admixed with a styrene-ethylene butylene-styrene block copolymer and mineral oil, the improvement wherein said composition comprises 87-91 percent by weight of said mineral oil, 5-7 percent by weight of said styrene-ethylene butylene-styrene block copolymer, and 2-6 percent by weight of a thermoplastic polymer consisting essentially of an isotactic, crystalline, polypropylene having an average molecular weight of between 20,000 and 50,000.
Claim 6
Dependent Claim
76 words
In a cable filling composition for use in water-proofing electrical cables wherein a thermoplastic polymer is admixed with a styrene-ethylene butylene-styrene block copolymer and mineral oil, the improvement wherein said composition comprises 87-91 percent by weight of said mineral oil, 5-7 percent by weight of said styrene-ethylene butylene-styrene block copolymer, and 2-6 percent by weight of a thermoplastic polymer consisting essentially of an isotactic, crystalline, polypropylene having an average molecular weight of between 20,000 and 50,000.
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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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |