Method of making a selected size injection molding nozzle
CA 2008171 C · Owner: Gellert, Jobst Ulrich · Inventors: Gellert, Jobst Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making injection molding nozzles of predetermined desired lengths and capacity which combines the advantages of large scale manufacturing with the flexability of individual assembly. Individual steel components such as a rear portion, an elongated forward portion, and a connector member are manufactured in volume, with the forward portion being made in different predetermined sizes. A forward portion having a particular length and melt bore diameter is then selected and assembled together with a rear portion and a connector member. If necessary, the melt channel through the rear portion and connector member are enlarged to match the bore of the forward portion. The assembled …
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 January 19, 1990 and granted May 20, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 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.