Hot-melt adhesive compositions
CA 1311867 C · Owner: Eastman Chemical Company · Inventors: Foster, Bruce William; Stuart, Richard Kingsley Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hot-Melt Adhesive Compositions, Abstract Disclosed is a hot-melt adhesive composition which is characterized by from 55 to 95 weight % of an amorphous polymer containing at least 30% propylene and from 45 to 5 weight % of a graft copolymer of, (a) a saturated, polycyclic hydrocarbon resin and, (b) maleic anhydride. 0245F
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
- Granted December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
- 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.