Method for packaging hot melt adhesives
CA 2136197 C · Owner: Ablestik Laboratories · Inventors: Giese, Robert; Thorpe, Roger; Hatfield, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-blocking hot melt adhesive mass is prepared by (a) lining a rigid mold with a plastic film said film being meltable, together with the adhesive composition and blendable into said molten adhesive composition and said mold being a heat sink or, being in contact with a heat sink; (b) pouring molten hot melt adhesive into the lined mold; and (c) allowing the molten hot melt adhesive to solidify.
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 14, 1993 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2015.
- 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.