Inventor · disambiguated record
Keiji Hata
Also filed as: HATA KEIJI
4 granted patents·149 citations·filing 1996–1999
81Inventor score
Technology areasA61H
Files withMATSUSHITA ELECTRIC WORKS LTD4
Top patents by PatentIndex Score
4 records- 0173US6190339B1Massage deviceMATSUSHITA ELECTRIC WORKS LTD·Filed 1997·Granted Feb 20, 2001·51 cites·17 claims
- 0261US5997489AMassager with rotatable head and rollerMATSUSHITA ELECTRIC WORKS LTD·Filed 1996·Granted Dec 7, 1999·36 cites·22 claims
- 0358US6436062B1Massaging applianceMATSUSHITA ELECTRIC WORKS LTD·Filed 1999·Granted Aug 20, 2002·31 cites·10 claims
- 0456US6210349B1Roller massaging apparatusMATSUSHITA ELECTRIC WORKS LTD·Filed 1997·Granted Apr 3, 2001·31 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →