Process for the improvement of the water-absorbing capacity and the absorptivity of textile materials
CA 1075408 A · Owner: Hoechst Aktiengesellschaft · Inventors: Lask, Helmut; Holst, Arno; Smerz, Ottokar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: Process for improving the water-absorbing capacity and absorptivity of fibrous materials consisting of or containing, synthetic fibers or filaments which comprises applying modified, highly absorbing cellulose ethers onto the fibrous materials and fixing these cellulose ethers on the fibrous materials with the aid of finishing agents, resins or binders.
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 April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 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.