Reactive hot-melt adhesive coating machine
CA 2252142 C · Owner: Hasegawa, Susumu · Inventors: Hasegawa, Susumu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reactive hot-melt adhesive coating machine capable of preventing a nozzle clogging by a simple construction is disclosed. A reactive hot-melt adhesive in a molten state supplied from an adhesive storage tank is fed to a spray means through an adhesive feeding passage. A cleaning fluid which is not curable reacting with moisture content in the ambient air is stored in a cleaning fluid storage tank. The cleaning fluid storage tank is connected to the adhesive feeding passage through a cleaning fluid feeding passage and a change-over valve. The change-over valve functions to disconnect the cleaning fluid feeding passage from the adhesive feeding passage when the reactive hot-melt adhesive is …
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 28, 1998 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2020.
- 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.