Painting tool
CA 2245595 C · Owner: Er, Poh Leong · Inventors: Er, Poh Leong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a paint, roller incorporating an internal reservoir (5) disposed within the interior, space of the roller for receiving and dispensing paint. The interior of the, roller communicates with the external surface of the roller over a plurality of slits (3) in the roller. An appli-, cator is laid over the external surface of the roller. Paint from the internal reservoir is dispensed evenly and au-, tomatically over the slits (3) and the applicators to the target surface. Disposed within the internal reservoir of the roller is a partition (4) for storing residue paint when the roller is, rested in a vertical or quasi-vertical position. As the centre of gravity 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 February 4, 1997 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2019.
- 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.