Inventor · disambiguated record
Chiharu Umetsu
Also filed as: UMETSU CHIHARU
9 granted patents·437 citations·filing 1986–2002
92Inventor score
Top patents by PatentIndex Score
9 records- 0196US6789576B2AccumulatorNHK SPRING CO LTD·Filed 2001·Granted Sep 14, 2004·62 cites·6 claims
- 0296US6286552B1Accumulator and manufacturing process thereofNHK SPRING CO LTD·Filed 2000·Granted Sep 11, 2001·56 cites·3 claims
- 0395US4858898AAccumulatorNHK SPRING CO LTD·Filed 1988·Granted Aug 22, 1989·81 cites·9 claims
- 0492US6810915B2Accumulator having a safety valveNHK SPRING CO LTD·Filed 2002·Granted Nov 2, 2004·53 cites·13 claims
- 0588US5027637ADie cushion for applying pressure to a press machine via gas pressurized push rodsNHK SPRING CO LTD·Filed 1989·Granted Jul 2, 1991·35 cites·23 claims
- 0686US4698050ALaminated metallic belt for torque transmission device and method of manufacture thereofHONDA MOTOR CO LTD·Filed 1986·Granted Oct 6, 1987·41 cites·16 claims
- 0785US5098071ADie spring apparatusNHK SPRING CO LTD·Filed 1990·Granted Mar 24, 1992·60 cites·4 claims
- 0877US4763882ACoated coil springNHK SPRING CO LTD·Filed 1986·Granted Aug 16, 1988·38 cites·6 claims
- 0970US6525290B2Accumulator and manufacturing process thereofNHK SPRING CO LTD·Filed 2001·Granted Feb 25, 2003·11 cites·4 claims
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