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Expired Canadian patentCanada

Dental floss containing encapsulated flavoring material

CA 2291175 C · Owner: Mitha, Amin · Inventors: Mitha, Amin; Anglin, Dave

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A dental floss is provided comprising a plurality of filaments of a substrate material formed into thread, an ingestible binder onthe filaments which are bound to particles of encapsulated agents. The encapsulated agents are flavorants, sweeteners and chemotherapeutic agents. The encapsulation of the agents provides a uniform taste and distribution of chemotherapeutic agent on the floss.

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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 May 28, 1998 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1998
GrantedNovember 12, 2002
Term endedMay 28, 2018
Patent numberCA 2291175 C
Classification (IPC)A61C15/04 +1 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMay 28, 1998Patent grantedNov 12, 2002Term endedMay 28, 2018

Sources & verification

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