U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Golf ball

Patent 5338039 Issued on August 16, 1994. Estimated Expiration Date: Icon_subject October 8, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1418220

4090716

Golf ball
Patent #: 4869512
Issued on: 09/26/1989
Inventor: Nomura ,   et al.

Multi-purpose golf ball Patent #: 4991852
Issued on: 02/12/1991
Inventor: Pattison

Inventors

Assignee

Application

No. 958164 filed on 10/08/1992

US Classes:

473/384Depth or width

Examiners

Primary: Marlo, George J.

Foreign Patent References

  • 2143397 FR. 12/26/1973
  • 648982 JP. 01/26/1989
  • 323184 JP. 03/26/1991
  • 2215620 GB 09/26/1989
  • 2242363 GB. 10/26/1991

International Class

A63B 037/14

Foreign Application Priority Data

1991-10-08 JP

Abstract

A golf ball having a plurality of dimples on a surface thereof characterized in that more than 40% of all dimples are polygonal in shape and have a double slope in section having a straight first slope and a straight second slope continued radially inwardly from the first slope, and the gradient of the first slope of said double slope disposed in the vicinity of a dimple edge is greater than that of the second slope disposed in the vicinity of the bottom thereof.

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