Patent ID: 7473188

Claim:
A putter head comprising three regions: an anterior region positioned on the facemost side; a posterior region positioned on the backmost side; and a joint region positioned between the anterior region and the posterior region, which are provided to divide the putter head equally in the face-to-back direction, said anterior region having an anterior thick part having a thickness of equal to or greater than 20 mm, said joint region having a thin part having a thickness of equal to or less than 7 mm, said posterior region having a posterior thick part having a thickness of greater than 7 mm, said joint region having a full-width part formed by making the full width of this joint region to correspond to the thin part, and provided that the length of the head in the face-to-back direction is A 1 , the length of the full-width part in the face-to-back direction being equal to or greater than (A 1 /6).