Expired Canadian patentCanada
Plastic drum with drain sump and method of making the same
CA 2104357 C · Owner: Gay, Raymond W. · Inventors: Gay, Raymond W.
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 one-piece plastic drum is formed with a top bottom and sidewall. The top is profiled to form a sump around an access opening so that when the drum is turned upside down, all the liquids are dispensed from the drum.
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 August 18, 1993 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 18, 1993
GrantedApril 20, 1999
Term endedAugust 18, 2013
Patent numberCA 2104357 C
Classification (IPC)B65D47/00 +1 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.