Elastomeric article with fine colloidal silica surface treatment, and its preparation
CA 2372590 A1 · Owner: Johnson, David W. · Inventors: Johnson, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface-modified article is formed of an elastomeric matrix such as a glove , shape, and a plurality of fine silica particles affixed to at least a portion of the surface of the matrix, the outside surface in the case of the glove. The fine silica particles increase the coefficient of friction of the article surface. The fine silica particles may also be made electrically conductive so that static charge at the surface of the article is dissipated. The silica particles are applied by mixing them into a coating composition applying the , coating composition to the surface of a mold and solidifying a flowable , elastomeric composition against the coated surface. The coating composition …
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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
- Filed June 5, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2022.
- 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.