Inventor
SAWAMOTO HIROKI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “SAWAMOTO HIROKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POWDERTECH CO LTD
13 patentsUS10754271B2Aug 25, 2020
Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
POWDERTECH CO LTD2 citations72
US11099495B2Aug 24, 2021
Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, developer, method for producing magnetic core material for electrophotographic developer, method for producing carrier for electrophotographic developer, and method for producing developer
POWDERTECH CO LTD0 citations62
US10996576B2May 4, 2021
Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
POWDERTECH CO LTD0 citations62
US10996579B2May 4, 2021
Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
POWDERTECH CO LTD0 citations62
US10969706B2Apr 6, 2021
Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
POWDERTECH CO LTD0 citations62
US11029618B2Jun 8, 2021
Carrier, electrophotographic developer and production method of carrier
POWDERTECH CO LTD1 citations58
US11422480B2Aug 23, 2022
Ferrite carrier core material for electrophotographic developer, ferrite carrier, manufacturing method thereof, and electrophotographic developer using said ferrite
POWDERTECH CO LTD0 citations51
US11112716B2Sep 7, 2021
Carrier core material for electrophotographic developer and method for producing the same, and carrier for electrophotographic developer and developer containing said carrier core material
POWDERTECH CO LTD0 citations51
US9588453B2Mar 7, 2017
Resin-filled ferrite carrier for electrophotographic developer and electrophotographic developer using the ferrite carrier
POWDERTECH CO LTD0 citations51
US9201328B2Dec 1, 2015
Core material for resin-filled ferrite carrier and ferrite carrier for electrophotographic developer, and electrophotographic developer using the ferrite carrier
POWDERTECH CO LTD0 citations51
US12204280B2Jan 21, 2025
Carrier, xerographic developer, and carrier production method
POWDERTECH CO LTD0 citations48
US10248039B2Apr 2, 2019
Carrier, electrophotographic developer, and method of manufacturing carrier
POWDERTECH CO LTD0 citations46
US10036982B2Jul 31, 2018
Carrier and electrophotographic developer using the carrier
POWDERTECH CO LTD0 citations41