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Expired Canadian patentCanada

Apparatus for delivering nitroglycerin to the skin, process for the production thereof and the use thereof

CA 1329363 C · Owner: Lohmann Gmbh & Co. Kg · Inventors: Meconi, Reinhold; Hoffmann, Hans-Rainer; Jaeger, Halvor

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

An apparatus for the controlled delivery or release of nitroglycerin to human or animal skin is disclosed. The apparatus is preferably in plaster form with a nitroglycerin-impermeable backing layer a single or, multiple-part reservoir containing a pressure sensitive adhesive single or multiple-part reservoir comprising nitroglycerin in uniform or irregular distribution and optionally, a removable protective layer impermeable to nitroglycerin. The reservoir is produced using hot melt pressure sensitive adhesives with a processing temperature of about 40 to 80°C, preferably about 40 to 60°C and in the particularly preferred manner about 40 to 55°C. The preferred use of the apparatus is for …

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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 May 10, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1988
GrantedMay 10, 1994
Term endedMay 10, 2011
Patent numberCA 1329363 C
Classification (IPC)A61K9/70 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 19, 1988Patent grantedMay 10, 1994Term endedMay 10, 2011

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