Method and apparatus for the manufacture of shaped products of biaxially oriented polymeric material
CA 2047674 C · Owner: Fortin, John Kevin · Inventors: Fortin, John Kevin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and methods for the formation of biaxially oriented thermoplastic articles having flat surfaces or sharp contours along with the articles themselves, are disclosed by the present invention. Such apparatus and method relate to the heat-shrinking of biaxially oriented intermediates (50) onto male forms (82 102) to produce , articles of exacting dimensions and flat surfaces or sharply defined contours.
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 6, 1990 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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.