Super absorbing polymer containing bodies, process for their manufacture and their use
CA 2257516 C · Owner: Groitzsch, Dieter · Inventors: Groitzsch, Dieter; Schaut, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are super absorbent polymer-containing bodies which include super absorbent polymers bound to polymer fibers whereby the super absorbent , polymers are at least partly present as microporous open-porous foam. The bodies are , used for the manufacture of diapers, feminine napkins tampons and other articles , of, hygiene and result in a lower stiffness of those articles.
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 18, 1999 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2021.
- 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.