Welding device for thermoplastics
CA 2042335 A1 · Owner: Laramy Products Company, Inc. · Inventors: Pottier, J. Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applicant: J. Pierre Pottier, For: Welding Device for Thermoplastics ABSTRACT OF DISCLOSURE, A welding device for thermoplastics includes a chamber for receiving a plastic welding rod at its inlet and issuing molten plastic at its outlet; means for heating the rod in the chamber to the melting point; and means for feeding the plastic rod into the chamber to drive out melted plastic rod and replace it with more rod to be melted.
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 May 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2013.
- 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.