Effervescent tablet, effervescent tablet for bath agent, effervescent tablet for washing detergent, effervescent tablet for oral administration and production methods thereof
CA 2397490 A1 · Owner: Morimoto, Kiyoshi · Inventors: Ohta, Motohiro; Morimoto, Kiyoshi; Watanabe, Yasushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Tablets which have been formed by compression-molding a mixture comprising granules of a main ingredient, granules of a carbonic acid salt and granules , of an organic acid by means of a pestle and a mortar and the surface of which , has, transferred and adherent thereto particles of a lubricant lustering , powder which was applied to the pestle and mortar for the compression molding.
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 January 17, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2023.
- 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.