Particulate polymers, their production and uses
CA 1331251 C · Owner: Ciba Specialty Chemicals Water Treatments Limited · Inventors: Allen, Adrian; Farrar, David; Flesher, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Particulate Polymers, their Production and Uses, Polymeric thickeners suitable for use as textile pigment print paste thickeners are particulate cross linked polymers having a particle size of below 20µm and have defined physical characteristics that indicates an optimum degree of cross linking and molecular size within the polymer.
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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
- 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.