Particles, modified at their surface by hydrophilic and hydrophobic groups
CA 1252344 A · Owner: Goldschmidt Ag · Inventors: Rossmy, Gerd; Holtschmidt, Ulrich; Koerner, Gotz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to particles having a size of less than 100µm the, particles being insoluble in organic solvents and water and having hydrophilic and hydrophobic groups at their surface said hydrophilic and hydrophobic groups being distributed anisotropically on the surface of the particles.
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 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
- 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.