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US3752865A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical cables insulated with extraction resistant stabilized polymers

Assignee: Dart Industries Inc
•
Filing: 1971-07-20
•
Granted: 1973-08-14
•
Expires: 1991-07-20
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Abstract

Abstract POLYMERIC COMPOSITIONS THAT CONTAIN A PHENOLIC RESIN CONTAINING REPEATING UNITS HAVING THE FORMULA: -CH(-R)-(2-HO,R''-1,3-PHENYLENE)-, -CH(-R)-(2-HO,HO,R''-1, 3-PHENYLENE)-, -SN-(2-HO,R''-1,3-PHENYLENE)-, AND -SN-(2- HO,HO,R''-1,3-PHENYLENE)- OR MIXTURES THEREOF WHEREIN R AND R'' ARE HYDROGEN OR ALKYL, CYCLOALKYL OR ARYL RADICALS HAVING FROM 1 TO 24 CARBON ATOMS, N IS 1 OR 2 AND THE AVERAGE NUMBER OF REPEATING UNITS IN SAID POLYMERIC COMPOUND IS AT LEAST 3, AND A METAL DEACTIVATOR HAVE UNEXPECTEDLY HIGH THERMAL OXIDATIVE STABILITY AFTER EXTRACTION BY VISCOUS LIQUIDS. THESE COMPOSITIONS ARE PARTICULARLY USEFUL IN THE INSULATION OF ELECTRICAL CABLES WHICH ARE UTILIZED IN ENVIRONMENTS LIKELY TO CAUSE EXTRACTION OF STABILIZER SYSTEMS.

Inventors

  • 👤 F Scardiglia
  • 👤 K Kiss

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 15:34
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24; C08L; C08L101/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L23/14; C08L23/142; C08L2201/00; C08L2201/08; C08L61/00; C08L61/04; C08L61/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294

Claims Analysis

Total Claims: 0
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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) 1976-08-13 1977-02-12 1977-08-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-13 1981-02-12 1981-08-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-13 1985-02-12 1985-08-14 $7700.00 Window Closed / Lapsed

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