Absorbent blend of grafted polysaccharide and cellulose
CA 1074475 A · Owner: Personal Products Company · Inventors: Morbey, Graham K.; Chatterjee, Pronoy K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Absorbent Blend of Grafted Polysaccharide and Cellulose Abstract of the Disclosure, A selected class of grafted polysaccharide is combined in intimate mixture with less absorbent particulate matter to form a core, said core being deposited into an absorbent product such as absorbent products such as tampons sanitary, napkins or diapers. -1-
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 March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 1997.
- 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.