Fluid flow filter and method of making same
CA 2121517 C · Owner: Eaton Corporation · Inventors: Desalvo, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wire mesh filter screen has a flat disc shape and is seated on a flat bottom counterbore in a threaded fitting. A circular knife edged punch pierces a ring of material from the counterbore wall surrounding the disc periphery. A second flat punch axially deforms the ring over the disc periphery to securely retain the screen in the fitting.
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 April 18, 1994 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.