Superabsorbent material, superabsorbent structure, absorbent article and process for preparing said superabsorbent
CA 2064871 A1 · Owner: Johnson & Johnson Industria E Comercio Ltda · Inventors: Pereira, Jose Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described a superabsorbent material having improved properties, consisting of a superabsorbent polymer whose original structure has been modified by expansion so that the final structure is expanded. This material is highly effective for the formation of absorbent structures and absorbent articles. The invention further provides a process for the preparation of said superabsorbent materials.
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 August 22, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2012.
- 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.