Inventor · disambiguated record
Koujun Utaka
Also filed as: UTAKA KOUJUN
4 granted patents·3 pending applications·0 citations·filing 2012–2022
53Inventor score
Top patents by PatentIndex Score
7 records- 0167US12338356B2Nonaqueous ink composition, and recording method and recorded matter manufacturing method using sameDNP FINE CHEMICALS CO LTD·Filed 2021·Granted Jun 24, 2025·0 cites·22 claims
- 0263US12435234B2Ink compositionDNP FINE CHEMICALS CO LTD·Filed 2021·Granted Oct 7, 2025·0 cites·8 claims
- 0359US2024270993A1Nonaqueous ink composition, ink set, recorded matter, recording method, and method for producing recorded matterDNP FINE CHEMICALS CO LTD·Filed 2022·Application pending·0 cites
- 0458US2024191091A1Nonaqueous ink composition, recording method using same, and method for producing recorded matterDNP FINE CHEMICALS CO LTD·Filed 2022·Application pending·0 cites
- 0558US2024174876A1Nonaqueous ink composition, ink set, recording method using same, method for producing recorded matter, recorded matter, and inkjet recording deviceDNP FINE CHEMICALS CO LTD·Filed 2022·Application pending·0 cites
- 0650US12473448B2Recording method, and ink composition used in recording methodDNP FINE CHEMICALS CO LTD·Filed 2021·Granted Nov 18, 2025·0 cites·15 claims
- 0749US9437881B2Reinforcing material for solid polymer fuel cell, and cohesive/adhesive composition for use in sameSAKAMOTO HIROTOSHI·Filed 2012·Granted Sep 6, 2016·0 cites·13 claims
Join the waitlist — get patent alerts
Get an alert when Koujun Utaka 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 →