One-part primerless adhesive
CA 2034166 C · Owner: Essex Specialty Products, Inc. · Inventors: Hung, Ju-Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a one-part adhesive which comprises a mixture of: (a) a polymerizable ethylenically unsaturated urethane polymer; and(b) a polymerizable ethylenically unsaturated acid acid salt, or acid anhydride wherein component (b) is present in an amount in the range of from 0.5 to 50 weight percent of component (a). Such an adhesive is especially suitable for bonding components together in the manufacture of automobiles, and is particularly suitable for bonding sheet molding compound (SMC) components to metal or to other SMC components.
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 15, 1991 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2013.
- 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.