Liquid sample reservoir suitable for use with a spraying apparatus
CA 2441306 C · Owner: Douglas, Malcolm F. · Inventors: Joseph, Stephen C. P.; Douglas, Malcolm F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A single use, disposable reservoir (30) of low volume for use in conjunction with a spray gun (1) for spray painting small areas for example 'spray out' , cards for colour matching a paint mix for spray painting a vehicle. The reservoir (30) is in the form of a syringe body (32) with a plunger (34) having a sealing member (54) slidable within the body (32) for drawing paint (57) into the body (32) via an open end (38). The body (32) has an aperture (42) adjacent to a closed end (36) and the plunger (34) can be moved to position the sealing member (54) between the aperture (42) and closed end (36) for releasing a partial vacuum created when the paint (57) is drawn into the body (32) …
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 March 14, 2002 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 2024.
- 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.