Polymer sheet for delivering laundry care additive and laundry care product formed therefrom
CA 1279749 C · Owner: Gueldenzopf, Thomas D. · Inventors: Gueldenzopf, Thomas D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An addition polymer of a water-insoluble soft monomer, a water-soluble anionic monomer and optionally, a water-soluble nonionic monomer and water-insoluble hard monomer is neutralized up to 100%, and formed into a sheet. A laundry care additive as a bleach, may be stored between a pair of opposed heat sealed sheets to provide a laundry care product adapted to be introduced into a laundry wash.
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 January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.