Inventor · disambiguated record
Keiko Nagayasu
Also filed as: NAGAYASU KEIKO
8 granted patents·74 citations·filing 1993–1996
86Inventor score
Top patents by PatentIndex Score
8 records- 0177US5652649ACharging device and image forming apparatusMINOLTA CO LTD·Filed 1995·Granted Jul 29, 1997·27 cites·17 claims
- 0260US5402213ACharging device for charging outer surface of photosensitive member including charging member formed by a layer comprising a copolymer of an olefin-type vinyl monomer and a fluorine-contained monomerMINOLTA CAMERA KK·Filed 1993·Granted Mar 28, 1995·12 cites·12 claims
- 0355US5557375AContact type charging device and image forming apparatus having the sameMINOLTA CO LTD·Filed 1995·Granted Sep 17, 1996·12 cites·19 claims
- 0441US5376995AContact charger having a curved surfaceMINOLTA CAMERA KK·Filed 1993·Granted Dec 27, 1994·5 cites·18 claims
- 0540US5631729AImage forming apparatusMINOLTA CO LTD·Filed 1995·Granted May 20, 1997·6 cites·4 claims
- 0639US5606400AImage forming apparatus with a member for shaving the surface of a photosensitive memberMINOLTA CO LTD·Filed 1995·Granted Feb 25, 1997·5 cites·6 claims
- 0738US5774169AImage forming apparatusMINOLTA CO LTD·Filed 1996·Granted Jun 30, 1998·5 cites·9 claims
- 0833US5504561AContact charger and image forming apparatus provided with sameMINOLTA CO LTD·Filed 1994·Granted Apr 2, 1996·2 cites·27 claims
Join the waitlist — get patent alerts
Get an alert when Keiko Nagayasu 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 →