Granules having core and their production
CA 1338596 C · Owner: Hirai, Shin-Ichiro · Inventors: Itoh, Shunichi; Hirai, Shin-Ichiro; Koyama, Hiroyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Granules having a core are produced by spraying core granules with a dispersion of a low substituted hydroxypropylcellulose (L-HPC), and if necessary simultaneously applying a dusting powder. The granules having a core thus obtained exhibit increased granule strength and improved disintegrating property as compared with those produced by known methods. An active ingredient such as a drug can be contained in the dispersion dusting powder or, core granules.
Read the whole patent
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 17, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.