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Expired Canadian patentCanada

Silver-containing, sol-gel derived bioglass compositions

CA 2377402 C · Owner: Coleman, Nichola J. · Inventors: Hench, Larry L.; Coleman, Nichola J.; Bellantone, Maria

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

Silver-containing, sol-gel derived bioactive glass compositions and methods of preparation and use thereof are disclosed. The compositions can be in the form of particles, fibers and/or coatings, among other possible forms and can be , used, for example, for treating wounds improving the success of skin grafts, reducing the inflammatory response and providing anti-bacterial treatments to a patient in need thereof. Anti-bacterial properties can be imparted to implanted materials, such as prosthetic implants sutures, stents, screws, plates, tubes and the like, by incorporating the compositions into or onto the implanted materials. The compositions can also be used to prepare devices …

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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 June 14, 2000 and granted January 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 14, 2000
GrantedJanuary 18, 2011
Term endedJune 14, 2020
Patent numberCA 2377402 C
Classification (IPC)A61K9/70 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJune 14, 2000Patent grantedJan 18, 2011Term endedJune 14, 2020

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