Long lasting contraceptive suppository composition and methods of use
CA 1338877 C · Owner: Das, Sudeb · Inventors: Ahmad, Nawaz; Ziets, George A.; Das, Sudeb
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions and methods for providing long lasting contraceptive protection comprising a mixture of a contraceptive effective amount of spermicidal agent a, polymeric gum, a dispersing agent, and a water miscible polyethylene glycol polymer suppository base; and mammalian contraceptive methods utilizing the compositions of the invention in suppository form to provide up to 12 hours of contraceptive protection after initial insertion of the suppository.
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 January 28, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2014.
- 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.