Cationic crosslinked waxy starch products, a method for producing the starch products, and use in paper products
CA 2589579 C · Owner: Cargill, Incorporated · Inventors: Garlie, David E.; Anderson, Kevin R.; Steinke, James D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed cationic crosslinked waxy starch products having a Brookfield viscosity of about 700 cps to about 2500 cps and a method for preparing the starch products. Also disclosed is the use of the cationic crosslinked waxy starch products having a Brookfield viscosity of about 700 cps to about 2500 cps in the production of paper products.
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 June 16, 2004 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2026.
- 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.