Process for the production of a coating on the surface of plasticizing screws for injection molding machines
CA 2206702 C · Owner: Engel Maschinenbau Gesellschaft M.B.H. · Inventors: Baldinger, Peter; Urbanek, Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for producing a coating on the surface of plastifier screws for injection-moulding machines. A metallic hard-metallic or ceramic , substance with a low distortion is applied to a steel screw base element by high-speed flame spraying. During this coating process a spray jet treats the , different surface regions of the screw base element (1) namely rib top (3), flanks (4) and screw base (5) partially independently.
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 October 3, 1996 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2018.
- 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.