US4953946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cables with low MS HEC water-blocking material
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1988-03-03
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Granted: 1990-09-04
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Expires: 2008-03-03
Abstract
Abstract PCT No. PCT/EP88/00159 Sec. 371 Date Feb. 13, 1988 Sec. 102(e) Date Feb. 13, 1988 PCT Filed Mar. 3, 1988 PCT Pub. No. WO88/06741 PCT Pub. Date Sep. 7, 1988.An electrical or fibre optic cable comprising one or more conducting filaments within a protective sheath are provided. The cable is characterized by having HEC powder between the filaments and the protective sheath. The HEC powder is of a type having an MS value between 0.7 and 1.25 and has not been treated with glyoxal.
Inventors
- 👤 Serge Huybrechts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:48
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/44384; H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; H01B7/288
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
An electrical or fibre optic cable comprising one or more conductive filaments within a protective sheath and having a hydroxyethyl cellulose powder between the protective sheath and the filaments wherein the improvement comprises using hydroxyethyl cellulose which has a hydroxyethyl molar substitution, i.e. an MS value, of from about 0.7 to about 1.25 and has not been treated with glyoxal.
Claim 2
Dependent Claim
60 words
An electrical or fibre optic cable comprising one or more conductive filaments within a protective sheath and having a hydroxyethyl cellulose powder between the protective sheath and the filaments wherein the improvement comprises using hydroxyethyl cellulose which has a hydroxyethyl molar substitution, i.e. an MS value, of from about 0.7 to about 1.25 and has not been treated with glyoxal.
Claim 3
Dependent Claim
24 words
An electrical or fibre optic cable as claimed in claim 1 in which the hydroxyethyl cellulose has an MS value between 0.8 and 1.2.
Claim 4
Dependent Claim
37 words
An electrical or fibre optic cable as claimed in claim 1 in which the hydroxyethyl cellulose is one in which greater than 90% by weight of the powder has a particle size of less than 175 microns.
Claim 5
Dependent Claim
66 words
A process for producing an electrical or fibre optic cable which comprises assembling one or more conductive filaments within a protective sheath and having a hydroxyethyl cellulose powder between the protective sheath and the filaments wherein the improvement comprises using hydroxyethyl cellulose which has a hydroxyethyl molar substitution, i.e. an MS value, of from about 0.7 to about 1.25 and has not been treated with glyoxal.
Claim 6
Dependent Claim
66 words
A process for producing an electrical or fibre optic cable which comprises assembling one or more conductive filaments within a protective sheath and having a hydroxyethyl cellulose powder between the protective sheath and the filaments wherein the improvement comprises using hydroxyethyl cellulose which has a hydroxyethyl molar substitution, i.e. an MS value, of from about 0.7 to about 1.25 and has not been treated with glyoxal.
Claim 7
Dependent Claim
20 words
The process of claim 4 wherein the hydroxyethyl cellulose has an MS value of from about 0.8 to about 1.2.
Claim 8
Dependent Claim
26 words
The process of claim 4 wherein greater than 90% by weight of the hydroxyethyl cellulose powder has a particle size of less than about 175 microns.
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) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |