Hot melt adhesive dispensing system with laminated air heater
CA 2267122 A1 · Owner: Kwok, Kui-Chiu · Inventors: Kwok, Kui-Chiu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air pre-heating apparatus useable for pre-heating air supplied to one or more hot melt adhesive dispensing nozzles mounted on an adhesive supply manifold. Air is supplied from an air supply inlet on an outer portion of an outer, heating member to an air supply outlet on an inner heating member having a heater, therein. The outer heating member formed of a plurality of laminated plates having, one or more air flow paths, which include preferably a serpentine air flow path portion, that increases the residence time of the air therein. The air is sunnlied through the, apparatus against a decreasing temperature gradient whereby heat is increasingly, added thereto before the air 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 March 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2021.
- 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.