Inventor · disambiguated record
Hayao Yahagi
Also filed as: YAHAGI HAYAO
11 granted patents·316 citations·filing 1977–1996
92Inventor score
Top patents by PatentIndex Score
11 records- 0193US5774633ASupporting neural network method for process operationHITACHI LTD·Filed 1990·Granted Jun 30, 1998·81 cites·14 claims
- 0279US5581459APlant operation support systemHITACHI LTD·Filed 1991·Granted Dec 3, 1996·50 cites·6 claims
- 0375US5943662ASupporting method and system for process operationHITACHI LTD·Filed 1994·Granted Aug 24, 1999·30 cites·2 claims
- 0471US4085596AAbsorption refrigerator of double effect typeHITACHI LTD·Filed 1977·Granted Apr 25, 1978·26 cites·14 claims
- 0570US4888703AApparatus for monitoring the toxicant contamination of water by using aquatic animalsHITACHI ENG CO LTD·Filed 1987·Granted Dec 19, 1989·52 cites·13 claims
- 0668US5465320AMethod of automated learning, an apparatus therefor, and a system incorporating such an apparatusHITACHI LTD·Filed 1992·Granted Nov 7, 1995·30 cites·1 claims
- 0761US5505843ASystem for controlling water treatment based on plankton monitoringHITACHI LTD·Filed 1994·Granted Apr 9, 1996·26 cites·10 claims
- 0840US5324431AProcess for treating suspended substances in liquorHITACHI LTD·Filed 1990·Granted Jun 28, 1994·11 cites·6 claims
- 0937US5845052ASupporting method and system for process operationHITACHI LTD·Filed 1996·Granted Dec 1, 1998·5 cites·17 claims
- 1030US4904388AProcess for sludge thickeningHITACHI LTD·Filed 1988·Granted Feb 27, 1990·3 cites·9 claims
- 1129US4960512AApparatus for sludge thickeningHITACHI LTD·Filed 1988·Granted Oct 2, 1990·2 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →