The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2019
Filed:
Jul. 28, 2017
Dunlop Sports Co. Ltd., Kobe-shi, Hyogo, JP;
Takahiro Sajima, Kobe, JP;
Kohei Mimura, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;
Abstract
A golf ball has a plurality of dimplesand a landon a surface thereof. The golf ball further has a large number of minute projectionsformed on surfaces of the dimplesand the land. An average pitch Pav of these minute projectionsis less than 100 μm. An average height Hav of these minute projectionsis not less than 0.5 μm and not greater than 50 μm. The golf ball satisfies the following mathematical formula.av<3*avIn the mathematical formula, Lav represents an average value of distances L between the minute projectionsand other minute projectionsadjacent to the minute projections, and Tav represents an average value of widths T of these minute projections