Liquid center thread wound golf ball
CA 2117654 A1 · Owner: Yamada, Mikio · Inventors: Sugimoto, Kazushige; Moriyama, Keiji; Yamada, Mikio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a thread wound golf ball comprising a liquid center composed of a rubber bag containing a liquid a rubber thread layer provided on the outside of the liquid center and a cover for covering the rubber thread layer wherein a moment of inertia measured at 23°C of the golf ball is 75 to 80 g~cm2 and a rate of increase of a moment of inertia measured at -30°C to that measured at 23°C is within 2%.
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 September 2, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 2, 2016.
- 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.