Assignee
HIRAI YASUMASA
JP·2 granted patents·2 citations·filing 2011–2011
Top patents by PatentIndex Score
2 records- 0175US8894779B2Bearing steel being excellent both in post spheroidizing-annealing workability and in post quenching-tempering hydrogen fatigue resistance propertyHIRAI YASUMASA·Filed 2011·Granted Nov 25, 2014·2 cites·2 claims
- 0250US9034120B2Bearing steel being excellent both in workability after spheroidizing-annealing and in hydrogen fatigue resistance property after quenching and temperingHIRAI YASUMASA·Filed 2011·Granted May 19, 2015·0 cites·2 claims
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