Oil filter cover
CA 2136412 C · Owner: Wawrzyniak, Timothy J. · Inventors: Wawrzyniak, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil filter cover has a housing with a cylindrical sidewalk an open end and, an opposing closed end. A cavity in the housing extends through the open end and is, adapted to receive an oil filter canister. An annular flange circumscribes the open end of the, housing and extends inward from the sidewall to partially close around and seal against the, oil filter canister. A piercing member extends into the cavity from the closed end to, puncture the canister. The piercing member is mounted to a plate which is located in the, cavity and abuts the closed end. Further a series of longitudinal ridges , extend into the cavity from the housing sidewall and are spaced circumferentially about …
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 November 22, 1994 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.