Inventor · disambiguated record
Yoshihiro Hirai
Also filed as: HIRAI YOSHIHIKO · HIRAI YOSHIHIRO
5 granted patents·1 pending application·66 citations·filing 1994–2024
77Inventor score
Top patents by PatentIndex Score
6 records- 0179US5625858AContact charging member, process for producing same and electrophotographic apparatus using sameCANON KK·Filed 1996·Granted Apr 29, 1997·31 cites·16 claims
- 0272US5742880ACharging member, and process cartridge and electrophotographic apparatus having the charging memberCANON KASEI KK·Filed 1996·Granted Apr 21, 1998·23 cites·22 claims
- 0360US12315394B2Cheating estimation device, cheating estimation method, and recording mediumOMRON TATEISI ELECTRONICS CO·Filed 2024·Granted May 27, 2025·0 cites·7 claims
- 0456US2025029512A1Learning support device, learning support method, and recording mediumOMRON TATEISI ELECTRONICS CO·Filed 2024·Application pending·0 cites
- 0555US10740815B2Searching device, searching method, recording medium, and programRAKUTEN INC·Filed 2014·Granted Aug 11, 2020·0 cites·13 claims
- 0647US5422194ALight-resistant polyaniline light-shielding film and liquid crystal display device using the sameNEC CORP·Filed 1994·Granted Jun 6, 1995·12 cites·11 claims
Join the waitlist — get patent alerts
Get an alert when Yoshihiro Hirai 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 →