Inventor · disambiguated record
Keiji Arai
Also filed as: ARAI KEIJI
15 granted patents·6 pending applications·206 citations·filing 1987–2024
92Inventor score
Files withKONICA MINOLTA INC9FUJITSU LTD6HITACHI LTD3ARAI KEIJI1HONDA GIKEN KOGYO KK HONDA MOTOR CO LTD1
Top patents by PatentIndex Score
21 records- 0183USD333641SMotorcycleHONDA GIKEN KOGYO KK HONDA MOTOR CO LTD·Filed 1991·Granted Mar 2, 1993·29 cites·1 claims
- 0282US6531661B2Multilayer printed circuit board and method of making the sameFUJITSU LTD·Filed 2001·Granted Mar 11, 2003·40 cites·7 claims
- 0376US4763155AShutter control device for cameraSEIKOSHA KK·Filed 1987·Granted Aug 9, 1988·15 cites·21 claims
- 0475US4761581AMagnetic wedgeHITACHI LTD·Filed 1987·Granted Aug 2, 1988·35 cites·5 claims
- 0572US7377030B2Wiring board manufacturing methodFUJITSU LTD·Filed 2005·Granted May 27, 2008·6 cites·6 claims
- 0668US12174584B2Electrostatic charge image developing tonerKONICA MINOLTA INC·Filed 2021·Granted Dec 24, 2024·0 cites·5 claims
- 0762US10698329B2Electrostatic image developerKONICA MINOLTA INC·Filed 2019·Granted Jun 30, 2020·0 cites·4 claims
- 0859US10338489B2Two-component developer and image forming method using the sameKONICA MINOLTA INC·Filed 2018·Granted Jul 2, 2019·0 cites·6 claims
- 0959US5287026ASuperconducting magnetic levitation apparatusHITACHI LTD·Filed 1991·Granted Feb 15, 1994·37 cites·18 claims
- 1055US7935891B2Wiring board manufacturing methodFUJITSU LTD·Filed 2008·Granted May 3, 2011·0 cites·1 claims
- 1153US10509338B2Two-component developer for developing electrostatic latent imageKONICA MINOLTA INC·Filed 2018·Granted Dec 17, 2019·0 cites·9 claims
- 1251US5448021ACopper plating process and wiring boardFUJITSU LTD·Filed 1994·Granted Sep 5, 1995·12 cites·1 claims
- 1351US2024337959A1Method for producing electrostatic charge image developing tonerKONICA MINOLTA INC·Filed 2024·Application pending·0 cites
- 1451US2024361710A1Image forming system and image forming methodKONICA MINOLTA INC·Filed 2024·Application pending·0 cites
- 1548US5538616AProcess for copper plating a wiring boardFUJITSU LTD·Filed 1995·Granted Jul 23, 1996·11 cites·3 claims
- 1648US2015378133A1Imaging Device, Lens Unit, And Method For Manufacturing Imaging DeviceKONICA MINOLTA INC·Filed 2014·Application pending·0 cites
- 1746US4777396ARotor of induction motorHITACHI LTD·Filed 1987·Granted Oct 11, 1988·12 cites·32 claims
- 1845US2023350318A1Image forming system and method for forming imageKONICA MINOLTA INC·Filed 2023·Application pending·0 cites
- 1942US2013062800A1Method for Producing Wafer LensARAI KEIJI·Filed 2011·Application pending·0 cites
- 2036US6021833AManufacturing line for multi-layered printed circuit boardsFUJITSU LTD·Filed 1996·Granted Feb 8, 2000·9 cites·21 claims
- 2136US2015077839A1Lens UnitKONICA MINOLTA INC·Filed 2013·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Keiji Arai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →