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Expired Canadian patentCanada

Human leukocyte interferon composition and skin treatment

CA 1321347 C · Owner: Viragen, Inc. · Inventors: Munch, David C.

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

A topical composition containing human leukocyte interferon for dermatological treatment is provided. The composition includes interferon and an enhancing penetrant dispersed in an inert and non-toxic vehicle and may include a softening agent. The composition is particularly well suited for treatment of skin lesions caused by herpes simplex, venereal warts condyloma and the, like. The treatment includes application of the topical composition directly to the infected sites.

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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 August 17, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 17, 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.
FiledSeptember 30, 1987
GrantedAugust 17, 1993
Term endedAugust 17, 2010
Patent numberCA 1321347 C
Classification (IPC)A61K9/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 30, 1987Patent grantedAug 17, 1993Term endedAug 17, 2010

Sources & verification

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