Cholesterol or neutral fat level reducer
CA 2172855 C · Owner: Shimizu, Sakayu · Inventors: Shimizu, Sakayu; Yamada, Hideaki; Kitagawa, Yoshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cholesterol or neutral fat level reducer comprises, as active ingredient, a dioxabicyclo- 3.3.0octane derivative having the general formula (I):, (I), wherein R1, R2, R3, R4, R5 and R6 independently represent a hydrogen atom or an alkyl having 1 to 3 carbon atoms, or R1 and R2 and/or R4 and R5 together form a methylene group or an ethylene group and n, m and ? are 0 or 1.
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 20, 1990 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 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.