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Expired Canadian patentCanada

Compressing aid for compressing powders

CA 1209049 A · Owner: Schlossman, Mitchell L. · Inventors: Schlossman, Mitchell L.

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

The compressing aid consists of particles of a Fischer-Tropsch synthetic saturated hydrocarbon wax having an average molecular formula of C48H98 an average, molecular mass of about 700 a minimum congealing point of, about 204°F and an average particle size of about 10 microns. For greater ease and dispersion during blending of the ingredients, the wax particles may be coated with 0.1 to 1.0% by weight of a lubricant such as dimethyl polysiloxane, isopropyl myristate, lauryl lactate or ethylhexyl palmitate. As an alternative to using these lubricants, coating the surface of the wax with about 0.10-0.20% of a protein zein of corn gluten lubricates the fine wax and aids in its dispersion in …

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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 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 1, 1983
GrantedAugust 5, 1986
Term endedAugust 5, 2003
Patent numberCA 1209049 A
Classification (IPC)A61K8/26 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedNov 1, 1983Patent grantedAug 5, 1986Term endedAug 5, 2003

Sources & verification

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