Coloured golf ball cover material
CA 2031050 A1 · Owner: Dunlop Limited · Inventors: Bradley, Wayne Rollins
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf ball cover material having an intense hue is made from a formulation consisting of an ionic copolymer at least partially neutralised with metal ions, a primary colourant, an opacifier and an optical brightener. Selection of the metal ions the degree of, neutralisation of the copolymer and the relative amounts of copolymer and colourant provides a series of intense hues. GOLF-US-1226
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 November 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2012.
- 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.