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Expired Canadian patentCanada

Continuous method of tableting

CA 1303501 C · Owner: Schlemmer, Lothar · Inventors: Farwerck, Karl-Peter; Klimesch, Roger Guenther; Schlemmer, Lothar

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

14 - 0.Z. 0050/38381, Abstract of the Disclosure: Extrudable pharmaceutical mixtures are tableted by a continuous method in which the mixture is extruded and the still deformable extrudate is pressed between two rollers which are driven in opposite directions and possess depressions opposite one another in the roller shell, the form of these depressions determining the tablet shapen

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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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
  • 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 10, 1987
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303501 C
Classification (IPC)A61K47/32 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 10, 1987Patent grantedJune 16, 1992Term endedJune 16, 2009

Sources & verification

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