Plastic bore seal
CA 2012033 C · Owner: Fmc Corporation · Inventors: Ungchusri, Tep; Earl, Paul M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic bore seal assembly for use in a static or dynamic, mode, comprising a sleeve-type seal element with an annular sealing lip at each end thereof, an anti-extrusion ring surrounding the seal element intermediate the sealing lips, one or more sleeve-like finger springs within the seal element and optionally a wear sleeve, within the seal element bore.
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 13, 1990 and granted February 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2012.
- 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.