Rubber compounds
CA 2110036 A1 · Owner: Taylor, Reginald Morton · Inventors: Hayes, Michael H.B.; Hallsworth, Ernest Gordon; Taylor, Reginald Morton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2110036 9221717 PCTABScor01, Disclosed are formulations of rubbers arising from a surprising finding of the effects of addition of compounds formed between certain metal compounds and polyhydric alcohols which contain terminal -CH2OH group or groups connected to an adjacent -COH group to rubber or rubber-like compounds. More specifically disclosed are methods of modifying the friction coefficient of rubber and the adhesion to metal characteristics, and to the rubber so modified. The compounds disclosed have a metal bonded via an oxygen residue of these hydroxyl groups. Polyhydroxy alcohols that might be used to form the compounds are, for example the alcohols, mannitol, xylitol, erythritol …
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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 May 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.