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Expired Canadian patentCanada

Shredded tobacco leaf pellet, production process thereof and a cigarette-like snuff

CA 1329905 C · Owner: Ohtomo, Mizuho · Inventors: Ogawa, Shigeru; Ohtomo, Mizuho; Kuriyama, Katsumi

CIPO record

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Abstract From the Canadian patent

A shredded tobacco leaf pellet is composed of tobacco leaf shreds bound together with a nicotinenon-absorptive thermoplastic binder while retaining air permeability. The pellet is produced by mixing tobacco leaf shreds and a nicotine-non-absorptive thermoplastic binder, forming the resultant mixture into a desired shape while retaining air permeability and then, subjecting the thus-formed mixture to a heat treatment. A cigarette-like snuff is composed of at least one shredded tobacco leaf pellet of the above-described type and an outer envelope surrounding the pellet therein. The shredded tobacco leaf pellet can give sufficient feeling of smoking without lighting It is suited for mass …

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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 31, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 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.
FiledApril 27, 1989
GrantedMay 31, 1994
Term endedMay 31, 2011
Patent numberCA 1329905 C
Classification (IPC)A24B3/14 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedApril 27, 1989Patent grantedMay 31, 1994Term endedMay 31, 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.