Inventor · disambiguated record
Takanobu Hatakeyama
Also filed as: HATAKEYAMA TAKANOBU · OHIRA TAKESHI
11 granted patents·306 citations·filing 1978–1996
92Inventor score
Top patents by PatentIndex Score
11 records- 0192US4794506AResonant DC-DC converterHITACHI MEDICAL CORP·Filed 1987·Granted Dec 27, 1988·101 cites·10 claims
- 0284US4378059AAbnormal elevator speed detectorHITACHI LTD·Filed 1981·Granted Mar 29, 1983·33 cites·8 claims
- 0377US4742535AInverter type X-ray apparatusHITACHI MEDICAL CORP·Filed 1985·Granted May 3, 1988·37 cites·16 claims
- 0472US4387436AMethod and apparatus for detecting elevator car positionHITACHI LTD·Filed 1980·Granted Jun 7, 1983·23 cites·8 claims
- 0571US5721490APower source apparatus including a plurality of output current amplifiers connected in parallel and MRI apparatus using the sameHITACHI MEDICAL CORP·Filed 1996·Granted Feb 24, 1998·36 cites·33 claims
- 0666US4553640AController for elevatorHITACHI LTD·Filed 1982·Granted Nov 19, 1985·17 cites·18 claims
- 0761US4768215AX-ray generator with current measuring deviceHITACHI MEDICAL CORP·Filed 1986·Granted Aug 30, 1988·21 cites·9 claims
- 0857US4441584AAC Elevator control systemHITACHI LTD·Filed 1981·Granted Apr 10, 1984·13 cites·21 claims
- 0952US4150734AElevator control apparatusHITACHI LTD·Filed 1978·Granted Apr 24, 1979·12 cites·15 claims
- 1038US4839915AInverter type X-ray apparatusHITACHI MEDICAL CORP·Filed 1988·Granted Jun 13, 1989·7 cites·12 claims
- 1133US4661757AController for AC elevatorHITACHI LTD·Filed 1984·Granted Apr 28, 1987·6 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →