Patents/Inventors

Akira Hikone

TokyoJP5 patents

6 Patents

US122921182025
Piston Ring
TPR Co., Ltd.
0 cites
US121963252025
Compression Ring
TPR Co., Ltd.
0 cites
US121737992024
Oil Control Ring
TPR CO., Ltd.
0 cites
US121170842024
Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
TPR Co., Ltd.
0 cites
US120922222024
Piston Ring Combination, and Internal Combustion Engine
TPR Co., Ltd.
0 cites
US120004912024
Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
TPR Co., Ltd.
0 cites