Inventor · disambiguated record
Hirofumi Ara
Also filed as: ARA HIROFUMI
6 granted patents·117 citations·filing 1989–1998
84Inventor score
Top patents by PatentIndex Score
6 records- 0183US4966261ALock-up torque converter for automatic transmissionsATSUGI MOTOR PARTS CO LTD·Filed 1989·Granted Oct 30, 1990·35 cites·8 claims
- 0279US5203835ALock-up torque converter for automatic transmissionATSUGI UNISIA CORP·Filed 1992·Granted Apr 20, 1993·31 cites·6 claims
- 0371US5245889AFlywheelATSUGI UNISIA CORP·Filed 1992·Granted Sep 21, 1993·30 cites·2 claims
- 0438US5415062AVibration damperATSUGI UNISIA CORP·Filed 1994·Granted May 16, 1995·10 cites·5 claims
- 0534US6220966B1Torque transmitting and torsion damping apparatus with torsion damperUNISIA JECS CORP·Filed 1998·Granted Apr 24, 2001·6 cites·3 claims
- 0632US6223625B1Torque transmitting and torsion damping apparatus for use in motor vehiclesUNISIA JECS CORP·Filed 1998·Granted May 1, 2001·5 cites·8 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →