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Expired Canadian patentCanada

Thread sealants with engineered fibers

CA 2604620 C · Owner: Wrobleski, John · Inventors: Scholer, Fred Richard; Wrobleski, John

CIPO record

Overview

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

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Abstract From the Canadian patent

A sealant is provided that possesses many or all of the characteristics of conventional , thread sealants, and allows application with improved smoothness and uniformity of , application. Sealants in accordance with the invention utilize engineered fibers such as , melamines like Basofil.TM. and polyaramids such as Kevlar.TM. in its composition. , Engineered fibers offer consistency and uniformity that other previously used sealants , lack. Engineered fibers can improve the gap filling characteristics of the sealant, as well , as the resistance of the sealant to chemicals and high pressures. Engineered fibers tend to , have very high strength and low density.

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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

  • Filed April 11, 2006 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 11, 2006
GrantedAugust 28, 2012
Term endedApril 11, 2026
Patent numberCA 2604620 C
Classification (IPC)C09K3/10

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedApril 11, 2006Patent grantedAug 28, 2012Term endedApril 11, 2026

Sources & verification

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