Treated tire curing bladders and method for curing tires
CA 2005890 C · Owner: The Goodyear Tire & Rubber Company · Inventors: Oliver, Brian Horsham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating a rubber expandable tire cure bladder by forming a base release coat thereon followed by application of a lubricant topcoat. The base release coat is derived by applying a composite of an hydroxyl terminated polyorganosiloxane and an aminoorganosilane to an expanded bladder and thereafter applying a lubricant topcoat derived from selected polyorganosiloxane components. The invention is further directed to a bladder prepared thereby and to a method of curing tires therewith.
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 18, 1989 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2011.
- 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.