Process for the agglomeration of water swellable polymers by means of melting granulation or sinter granulation with powder like agents and the use of the granular material
CA 1338730 C · Owner: Chemische Fabrik Stockhausen Gmbh · Inventors: Brehm, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to granular material of water-swellable polymers having a content of water- -swellable polymer and agglomeration auxiliary agent as main component, and optionally further additional non-agglomerating components, the invention further relates to the method for the manufacture of said material, to its use as absorbents and to disposable articles for hygienic purposes.
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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 November 26, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2013.
- 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.