Inventor · disambiguated record
Isao Hayase
Also filed as: HAYASE ISAO
43 granted patents·12 pending applications·1,006 citations·filing 1982–2024
98Inventor score
Top patents by PatentIndex Score
55 records- 0198US7354259B2Scroll compressor having a valved back pressure chamber and a bypass for overcompressionHITACHI LTD·Filed 2005·Granted Apr 8, 2008·67 cites·3 claims
- 0298US7118358B2Scroll compressor having a back-pressure chamber control valveHITACHI LTD·Filed 2005·Granted Oct 10, 2006·76 cites·1 claims
- 0398US6589035B1Scroll compressor having a valved back-pressure chamber and a bypass for over-compressionHITACHI LTD·Filed 1997·Granted Jul 8, 2003·95 cites·14 claims
- 0497US7137796B2Scroll compressorHITACHI LTD·Filed 2004·Granted Nov 21, 2006·71 cites·4 claims
- 0597US6769888B2Scroll compressor having a valved back pressure chamber and a bypass for overcompressionHITACHI LTD·Filed 2003·Granted Aug 3, 2004·69 cites·3 claims
- 0694US5938417AScroll type fluid machine having wraps formed of circular arcsHITACHI LTD·Filed 1996·Granted Aug 17, 1999·74 cites·19 claims
- 0788US5063829AVariable displacement swash plate type compressorHITACHI LTD·Filed 1990·Granted Nov 12, 1991·65 cites·21 claims
- 0886US7086359B2Rotational phase adjusterHITACHI LTD·Filed 2005·Granted Aug 8, 2006·10 cites·17 claims
- 0985US6352418B1Displacement type fluid machineHITACHI LTD·Filed 2000·Granted Mar 5, 2002·27 cites·20 claims
- 1081US5531577AScroll type fluid machine having a lever driving mechanismHITACHI LTD·Filed 1994·Granted Jul 2, 1996·37 cites·15 claims
- 1180US7581519B2Phase adjusting apparatus and a cam shaft phase adjusting apparatus for an internal combustion engineHITACHI LTD·Filed 2007·Granted Sep 1, 2009·7 cites·11 claims
- 1279US5105728ABalanced variable-displacement compressorHITACHI LTD·Filed 1990·Granted Apr 21, 1992·40 cites·10 claims
- 1379US4801248AVariable capacity swash plate compressorHITACHI LTD·Filed 1987·Granted Jan 31, 1989·35 cites·7 claims
- 1476US7150251B2Valve timing control apparatusHITACHI LTD·Filed 2005·Granted Dec 19, 2006·6 cites·10 claims
- 1575US4723895AMethod of and apparatus for effecting volume control of compressorHITACHI LTD·Filed 1985·Granted Feb 9, 1988·30 cites·10 claims
- 1674US7588423B2Pump for liquid chromatographHITACHI HIGH TECH CORP·Filed 2003·Granted Sep 15, 2009·11 cites·4 claims
- 1773US4608002ARotary vane compressor with hook-like suction passageHITACHI LTD·Filed 1983·Granted Aug 26, 1986·25 cites·4 claims
- 1872US7021912B2Scroll fluid machineHITACHI LTD·Filed 2003·Granted Apr 4, 2006·13 cites·14 claims
- 1972US6345967B1Scroll type fluid machine having different wrap side surface clearancesHITACHI LTD·Filed 2000·Granted Feb 12, 2002·14 cites·7 claims
- 2072US5960697AAxial piston machineHITACHI LTD·Filed 1998·Granted Oct 5, 1999·30 cites·16 claims
- 2170US4515513ARotary compressor with inner and outer cylinders and axial insert type discharge valvesHITACHI LTD·Filed 1983·Granted May 7, 1985·22 cites·9 claims
- 2269US9644627B2Gear pumpITO TAKAHIRO·Filed 2012·Granted May 9, 2017·1 cites·10 claims
- 2369US6905318B2Compressor including tapered discharged valve and valve seatHITACHI LTD·Filed 2001·Granted Jun 14, 2005·11 cites·13 claims
- 2469US5231914AVariable displacement compressorHITACHI LTD·Filed 1991·Granted Aug 3, 1993·27 cites·13 claims
- 2568US4929159AVariable-displacement rotary compressorHITACHI LTD·Filed 1988·Granted May 29, 1990·21 cites·16 claims
- 2665US4619595ACapacity control device for compressorHITACHI LTD·Filed 1984·Granted Oct 28, 1986·21 cites·3 claims
- 2761US4515514AVane-type rotary machineHITACHI LTD·Filed 1982·Granted May 7, 1985·16 cites·2 claims
- 2860US6637550B2Displacement type fluid machineHITACHI LTD·Filed 2001·Granted Oct 28, 2003·10 cites·18 claims
- 2959US9188211B2Roller screwYAMADA HIROYUKI·Filed 2011·Granted Nov 17, 2015·1 cites·5 claims
- 3059US6494696B2Scroll compressorHITACHI LTD·Filed 2001·Granted Dec 17, 2002·7 cites·5 claims
- 3157US12228134B2Constant-flow pulseless rotary-vane-type displacement machineHAYASE ISAO·Filed 2024·Granted Feb 18, 2025·0 cites·17 claims
- 3255US4815943AVariable displacement wobble plate compressor with capacity control valveHITACHI LTD·Filed 1987·Granted Mar 28, 1989·16 cites·13 claims
- 3354US4507068AVane type rotary machineHITACHI LTD·Filed 1982·Granted Mar 26, 1985·13 cites·2 claims
- 3453US7424875B2Phase controller and cam shaft phase controller for internal combustion engineHITACHI LTD·Filed 2007·Granted Sep 16, 2008·1 cites·19 claims
- 3552US2012012425A1Linear actuator and forklift truckHAYASE ISAO·Filed 2009·Application pending·0 cites
- 3650US6332763B1Displacement type fluid machine having an orbiting displacer forming a plurality of spacesHITACHI LTD·Filed 2000·Granted Dec 25, 2001·3 cites·3 claims
- 3748US2012169145A1Linear ActuatorHAYASE ISAO·Filed 2012·Application pending·0 cites
- 3845US2011259673A1Linear actuatorHAYASE ISAO·Filed 2009·Application pending·0 cites
- 3943US8156833B2Linear actuatorHAYASE ISAO·Filed 2007·Granted Apr 17, 2012·0 cites·9 claims
- 4043US4711620AMoving vane type compressorHITACHI LTD·Filed 1985·Granted Dec 8, 1987·10 cites·1 claims
- 4143US2012303226A1Electrically-driven operating device and working machine incorporating the sameYAMASAKI MASARU·Filed 2011·Application pending·0 cites
- 4242US2012141315A1External Gear PumpSETO SHINJI·Filed 2011·Application pending·0 cites
- 4342US2012174691A1Linear actuatorYAMADA HIROYUKI·Filed 2010·Application pending·0 cites
- 4440US6280165B1Scroll type fluid machineHITACHI LTD·Filed 1999·Granted Aug 28, 2001·8 cites·7 claims
- 4540US2013160583A1Roller ScrewHITACHI LTD·Filed 2012·Application pending·0 cites
- 4640US2008251042A1Device for Controlling Phase of Cam Shaft in Internal Combustion Engine and Phase Controlling deviceHITACHI LTD·Filed 2007·Application pending·0 cites
- 4739US6332764B1Displacement type fluid machine having an orbiting displacer forming a plurality of spaces and method for manufacturing sameHITACHI LTD·Filed 2000·Granted Dec 25, 2001·0 cites·1 claims
- 4839US6164941ADisplacement type fluid machine having an orbiting displacer forming a plurality of spacesHITACHI LTD·Filed 1999·Granted Dec 26, 2000·4 cites·5 claims
- 4939US2013283947A1Linear actuatorYAMADA HIROYUKI·Filed 2010·Application pending·0 cites
- 5039US2011179896A1Lead screw apparatus, linear actuator, and lift apparatusHIRAKU KENJI·Filed 2011·Application pending·0 cites
Showing the top 50 of 55 patent records by PatentIndex Score.
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