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Expired Canadian patentCanada

Vitamin-containing granules and production thereof

CA 1308024 C · Owner: Takeda Chemical Industries, Ltd. · Inventors: Izuhara, Seiji; Maeno, Masaya; Kitamori, Nobuyuki

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Abstract From the Canadian patent

24205-689, Abstract of the Disclosure, A vitamin-containing granule substantially comprising one or more compounds selected from the group consisting of vitamin B6, vitamin B2, nicotinamide and a pantothenic acid salt and a binding agent, said compound or compounds accounting for 90 to 99 weight % of the granules on the dry basis can be prepared by spray-coating the powders of said compound or compounds with a solution containing a binder while maintaining the powders in the fluidized state in a fluidized-bed granulation apparatus. The granules are highly flowable and blend well with other medicaments, granules, additives, and so on. In addition to this the granules have excellent …

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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 September 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 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.
FiledOctober 1, 1986
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1308024 C
Classification (IPC)A61K31/44 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 1, 1986Patent grantedSep 29, 1992Term endedSep 29, 2009

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