Colostomy pouch with vent valve
CA 2122974 C · Owner: Colacello, Michael A. · Inventors: Colacello, Michael A.; Colacello, Albert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manual gas vent assembly is provided herein for use in venting gas from the interior of a conventional unvented ostomy collection pouch. In such assembly the, manual gas venting assembly is used for venting gas from the interior of a conventional unvented ostomy pouch after a hole has been punctured through the wall of the ostomy collection pouch to permit the insertion of the valve assembly therethrough. The valve assembly includes a valve assembly having an open position which permits gas to pass therethrough, and a closed position, which prevents gases from passing therethrough the, valve assembly having an externally-threaded input portion for communicating with the interior of the …
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 May 5, 1994 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2016.
- 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.