Rapid-releasing oral particle pharmaceutical preparation with unpleasant taste masked
CA 2021574 C · Owner: Makita, Hirokazu · Inventors: Makita, Hirokazu; Sogo, Kiyomi; Nakamura, Yasuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rapid-releasing oral particle phamaceutical preparation with its unpleasant taste masked comprising a core and a film layer coating the core the core at least, containing a drug having an unpleasant taste and a water-swelling agent, and the film layer at least containing ethylcellulose and a water-soluble substance the amount, of the drug in the core being at most 40 % (based on the final particle preparation and so on), the amount of the water-swelling agent being about 35 % to about 70 % the, amount of ethylcellulose in the film layer being about 3 to about 11 %, and the the amount of the water-soluble substance being about 0.1 to about 0.8 times the weight of the ethylcellulose.
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
- Filed July 19, 1990 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2012.
- 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.