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US3657386A Expired / Lapsed US ⏱️ 0.0 years remaining

Antistatic polyamide fiber containing polyether

Assignee: Honeywell International Inc
•
Filing: 1970-04-30
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Granted: 1972-04-18
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Expires: 1990-04-30
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Abstract

Abstract IT HAS BEEN FOUND THAT AN ANTISTATIC FIBER OF POLYAMIDE, POLYESTER, POLYUREA, POLYURETHANE OR POLYSULFONAMIDE CAN BE PREPARED BY UNIFORMLY DISPERSING BETWEEN ABOUT 1 PERCENT AND ABOUT 12 PERCENT BY WEIGHT OF A COMPOUND REPRESENTED BY THE FORMULA: H-(O-CH2-CH2)Y-(O-CH(-CH3)-CH2)C-N(-CH2-CH(-CH3)-O)D-(CH2- CH2-O)Z-H)-CH2-CH2-N(-(CH2-CH(-CH3)-O)A-(CH2-CH2-O)X-H)- (CH2-CH(-CH3)-O)B-(CH2-CH2-O)W-H WHERE A,B,C,D,W,X,Y, AND Z ARE EACH A WHOLE NUMBER AND THE TOTAL OF A,B,C, AND D IS BETWEEN 8 AND 850 AND THE TOTAL OF W,X,Y, AND Z IS BETWEEN 8 AND 1,000. THE COMPOUND HAS A MOLECULAR WEIGHT BETWEEN ABOUT 4,000 AND 135,000 AND THE ETHYLENE OXIDE MOIETY MAKES UP 10 TO 90% OF THE MOLECULAR WEIGHT OF THE COMPOUND.

Inventors

  • 👤 Gene C Weedon
  • 👤 Lamberto Crescentini

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 09:12
CPC Classifications
C; C08; C08L; C08L77/00; C08L67/00; C08L75/00; C08L2201/00; C08L2201/04; Y; Y10; Y10S; Y10S525/00; Y10S525/927

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) 1975-04-18 1975-10-18 1976-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-18 1979-10-18 1980-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-18 1983-10-18 1984-04-18 $7700.00 Window Closed / Lapsed

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