ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,235, issued on May 27, was assigned to Shinji Katsurayama (Nagoya, Japan).
"Ball for ball game" was invented by Shinji Katsurayama (Nagoya, Japan), Akio Takagi (Oyama, Japan), Hironori Sato (Oyama, Japan), Mitsuyoshi Ishikawa (Nagakute, Japan) and Tatsuki Shimojo (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This ball for ball game includes: a spherical skin portion formed to be transparent at least partially so that inside of an internal space is visible from outside; a tubular retention portion provided in the internal space and extending so as to connect two poles of the skin portion, the tubular retention portion having a surroun...