Drum and process for handling drum liners
CA 2061161 C · Owner: Bartlett, Philip D. · Inventors: Lind, Earl V.; Bartlett, Philip D.; Lima, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Drums liners and methods used in the handling of hazardous materials and liquids comprising the use of disposable drum liners having a fitting allowing communication with the interior of the liner for securing the liner to a conventional drum bung hole, said fitting to be used to evacuate and collapse the liner, and a reseal plug attached to the fitting to seal the collapsed liner said reseal plug, having means to accept a plunger. The lid of the drum is removed and the sealed liner is taken from the drum using the plunger attached to the reseal plug. The liner is then placed into a disposal drum made of the same material as the liner and compressed. Once the disposal drum contains a …
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 February 13, 1992 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 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.