Reclosable coffee cup cover
CA 2044477 C · Owner: Sawatsky, David Paul · Inventors: Sawatsky, David Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A removable closure cover for a drinking vessel such as a cup or mug has an outer cover for attachment to the mouth of the vessel, with an aperture adjacent the edge through which a user may drink. An inner cover secured to the outer cover is selectively moveable into opening or closing relation with the aperture. While useable with insulated plastic drinking cups the closure cover also may be used with traditional mug or cup forms, to enable tranportation of a hot drink in sealed in-, sulated relation, thus extending the utility of the traditional, non-disposable mug, in an ecology promoting fashion. Manipulation of the cover provides controlled ventilation of the container and permits …
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 June 13, 1991 and granted July 27, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2013.
- 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.