Compacted agglomerates of polymer latex particles
CA 1279745 C · Owner: Okada, Wataru · Inventors: Miki, Yasuhiro; Yasui, Hideo; Okada, Wataru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides polymer latex grains having latex particles which compose each coagulated grain compacted therein in the state of not being mutually fused; said grains are obtained by the following steps of (A)-(E): (A) into a polymer latex manufactured by emulsion polymerization or suspension polymerization a coagulant, is added at a temperature lower than the temperature (softening temperature) at which latex particles are adhered by fusion, to be dispersed and scattered in said polymer latex as minute volumes of said coagulant before said coagulant has been dissolved and diffused into said polymer latex;, (B) by letting said coagulant dissolve and diffuse into said latex …
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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 January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.