Apparatus and method for draining out the residual oil in a replaceable oil filter used in a marine engine for avoiding pollution to the environment when changing filters
CA 2117403 C · Owner: Kucik, Michael · Inventors: Kucik, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to an oil filter cartridge containing a sealed outlet orifice which can be opened to allow for efficient oil recovery. An oil filter cartridge with an outlet valve is considered to be part of the claimed invention. The oil filter cartridge with attached valve is particularly beneficial, for use on marine engines where quarters are cramped and the chance for water pollution due to oil spill is great.
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 July 25, 1994 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2016.
- 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.