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Expired Canadian patentCanada

Nonwoven medical fabric

CA 1318993 C · Owner: Surgikos, Inc. · Inventors: Addy, Tralance Obuama; Mcamish, Larry Hughey; Lee, George Fong-Jen

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure A non-reinforced microfiber fabric and a method of producing same is disclosed. The fabric has minimum grab tensile strength to weight ratio greater than 0.8 N per gram per square meter and a minimum Elmendorf tear strength to weight ratio greater than 0.04 N per gram per square meter. The fibers in the fabric have an average length greater than 10 centimeters and at least 80% of the fibers have a diameter of 7 microns or less. The fabric is made by maintaining the polymer melt temperature at a level which minimizes molecular degradation and controlling the primary air velocity, volume and temperature to produce the fibers with the above-stated characteristics. A …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 6, 1986
GrantedJune 15, 1993
Term endedJune 15, 2010
Patent numberCA 1318993 C
Classification (IPC)D04H1/56

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 6, 1986Patent grantedJune 15, 1993Term endedJune 15, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.