Electrorheological fluids containing cellulose and functionalized polysiloxanes
CA 2099126 A1 · Owner: The Lubrizol Corporation · Inventors: Pialet, Joseph W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
49-, Title: ELECTRORHEOLOGICAL FLUIDS CONTAINING CELLULOSE AND FUNCTIONALIZED POLYSILOXANES, Abstract of the Disclosure Electrorheological fluids are described which comprise a hydrophobic liquid phase, cellulosic particles as a dispersed phase and from about 0.1 up to about 25% by weight, based on the weight of the hydrophobic liquid phase of at least one functionalized polysiloxane containing at least one functional group which is capable of being absorbed or adsorbed on the surface of the cellulosic particles. The electrorheological fluids of the invention are useful in a variety of applications including flotational coupling devices such as clutches for automobiles or industrial motors, …
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
- Filed December 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2014.
- 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.