Golf club
CA 2377868 A1 · Owner: Iwata, Mototaka · Inventors: Onoda, Kenji; Iwata, Mototaka; Sakai, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf club, comprising a metal head part (1) having a face part (2) the face , part (2) further comprising a deflection area having a deflection amount of 45% or more of the max. vertical deflection amount of the face part (2) in the direction vertical to the face part (2) wherein the deflection area is , disposed on the face part (2) according to a player's hitting point distribution range (9) on the face part (2) and a deflection range with a , spring constant of 2 kN/mm or more and 4 kN/mm or below is present on the face part (2) of the golf club.
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 April 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2023.
- 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.