Starch hemicellulose adhesive for high speed corrugating
CA 2113497 C · Owner: Bestfoods · Inventors: Fitt, Larry E.; Pienkowski, James J.; Wallace, Jack R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Starch-based corrugating adhesives of the carrier no- carrier and carrier-no-carrier type having improved green strength and water resistance are prepared by adding hemicellulose to the adhesive composition. When the adhesive is the carrier type or the carrier-no-carrier type the hemicellulose can be extracted from corn fiber in situ during the process of preparing the carrier phase.
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 14, 1994 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2016.
- 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.