Blended yarn containing active carbon staple fibers, and fabric woven therefrom
Patent 4457345 Issued on July 3, 1984. Estimated Expiration Date: 
November 15, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 15, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3648451 3744534 3866405 Method of making carbon cloth from pitch based fiber Composite yarn Process for production of activated carbon fibers Heat resistant and protective fabric and yarn for making the same High performance carbon fiber, process for production thereof, and composite materials prepared therewith Patent #: 4347279 InventorsApplicationNo. 06/441693 filed on 11/15/1982US Classes:139/420R, Materials57/252, Staple fiber blends57/255Synthetic materialExaminersPrimary: Watkins, DonaldAttorney, Agent or FirmInternational ClassesD02G 3/02 (20060101)D02G 3/16 (20060101) D02G 3/44 (20060101) Foreign Application Priority Data1981-11-14 DEAbstractA yarn is prepared from a mixture of textile staple fibers and active carbon staple fibers which consists of 5 to 75%, preferably 20 to 40%, of the latter by weight, by chopping active carbon monofilaments into staple fibers, mixing them with textile staple fibers in a liquid vehicle, separating the fibers from the liquid vehicle and spinning them to yarn which can be used in weaving fabrics of tensile strengths of as much as 2000 newtons per 5 centimeters, which in turn can be used in making filters and protective suits. | |
