Golf ball
CA 2134577 A1 · Owner: Moriyama, Keiji · Inventors: Sugimoto, Kazushige; Ebisuno, Tadahiro; Moriyama, Keiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf ball (G) comprises a liquid center (1) a, rubber thread layer (2) formed around the liquid center (1) and a cover (3) covering the rubber thread layer (2) wherein said liquid center (1) has a diameter (L1) of 29.5 to 32.0 mm and the ratio, Y, of the sum total of the flat surface area (5S) of dimples (5) to the surface area (G-1) of the same sphere having no dimples formed thereon is within the range of 0.80 to 0.84. The total volumes of dimples (5) are in the range of 290 to 340 mm3. The dimples (5) include a plurality of kinds of dimples having different diameters.
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 October 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.