Inventor · disambiguated record
Masahide Hama
Also filed as: HAMA MASAHIDE
5 granted patents·11 citations·filing 2011–2020
73Inventor score
Top patents by PatentIndex Score
5 records- 0180US10072755B2Combination oil ringTPR CO LTD·Filed 2016·Granted Sep 11, 2018·2 cites·3 claims
- 0280US9845873B2Combination oil ringTPR CO LTD·Filed 2016·Granted Dec 19, 2017·2 cites·4 claims
- 0375US9458933B2Combination oil ringAYUZAWA NORIAKI·Filed 2011·Granted Oct 4, 2016·5 cites·6 claims
- 0471US9726286B2Combination oil ringAYUZAWA NORIAKI·Filed 2012·Granted Aug 8, 2017·2 cites·4 claims
- 0544US11603929B2Wire for piston ring, and manufacturing method of piston ringTPR CO LTD·Filed 2020·Granted Mar 14, 2023·0 cites·5 claims
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