Inventor · disambiguated record
Kotaro Hagiwara
Also filed as: HAGIWARA KOTARO
3 granted patents·5 pending applications·34 citations·filing 1980–2016
66Inventor score
Top patents by PatentIndex Score
8 records- 0175US4753678ASintered hard metal having superior toughnessSUMITOMO ELECTRIC INDUSTRIES·Filed 1986·Granted Jun 28, 1988·26 cites·3 claims
- 0253US2004006536A1Electronic money systemFiled 2002·Application pending·0 cites
- 0352US2004049421A1Point sales server and point sales methodFiled 2002·Application pending·0 cites
- 0452US2004093308A1Electronic transaction systemFiled 2002·Application pending·0 cites
- 0550US2016283966A1Point selling server, point selling methodSONY CORP·Filed 2016·Application pending·0 cites
- 0649US10013696B2Identification information supervising method, portal information providing apparatus, and IC cardKAWASHIMA TAKASHI·Filed 2002·Granted Jul 3, 2018·0 cites·9 claims
- 0746US2004049423A1Point return method and apparatusFiled 2002·Application pending·0 cites
- 0845US4274185ARoll assembly for use in rolling a wire rodSUMITOMO ELECTRIC INDUSTRIES·Filed 1980·Granted Jun 23, 1981·8 cites·5 claims
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