Inventor · disambiguated record

Kei Katayama

Also filed as: KATAYAMA KEI

2 granted patents·29 citations·filing 2000–2000

61Inventor score

Technology areasF03B F16D

Files withHITACHI LTD1

Top patents by PatentIndex Score

2 records

0177US6336322B1Method of controlling a pump turbineHITACHI LTD·Filed 2000·Granted Jan 8, 2002·16 cites·47 claims
0262US6602044B1Pump turbine, method of controlling thereof, and method of stopping thereofFiled 2000·Granted Aug 5, 2003·13 cites·52 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →