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Expired Canadian patentCanada

Floatable oral therapeutic system

CA 1325366 C · Owner: Muller, Walter · Inventors: Anders, Edzard; Muller, Walter

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 floatable oral, therapeutic system is disclosed, through which a lengthening of the gastrointestinal residence time of medicaments and a controlled delivery thereof are achieved. The system is specifically lighter than the gastric fluid and allows the medicaments to float in the gastric fluid, and can only reach the lower-lying pylorus with difficulty. The system employs at least one structural element with cavities or voids such as foams or, hollow bodies.

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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 December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 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.
FiledJanuary 24, 1989
GrantedDecember 21, 1993
Term endedDecember 21, 2010
Patent numberCA 1325366 C
Classification (IPC)A61M31/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJan 24, 1989Patent grantedDec 21, 1993Term endedDec 21, 2010

Sources & verification

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