Expired Canadian patentCanada
Pharmaceutical composition for periodontal diseases
CA 1290695 C · Owner: Hayashi, Shin'Ichi · Inventors: Higashi, Kiyotsugu; Morisaki, Katsuhiko; Hayashi, Shin'Ichi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition for treating periodontal diseases which comprises one or more therapeutically active ingredients admixed with a polymer capable of dissolving in an aqueous medium of pH 4.0 or higher.
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 1987
GrantedOctober 15, 1991
Term endedOctober 15, 2008
Patent numberCA 1290695 C
Classification (IPC)A61K9/06 +2 more
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.