P

Inventor

UEMURA TETSUYA

JP50 patents
⚠️ This page may combine multiple inventors who share the name “UEMURA TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

POWDERTECH CO LTD

19 patents
US7521163B2Apr 21, 2009

Resin-coated ferrite carrier for electrophotographic developer, its production method, and electrophotographic developer using the resin-coated ferrite carrier

POWDERTECH CO LTD7 citations73
US10754271B2Aug 25, 2020

Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer

POWDERTECH CO LTD2 citations72
US12455516B2Oct 28, 2025

Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer

POWDERTECH CO LTD0 citations63
US12436480B2Oct 7, 2025

Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer

POWDERTECH CO LTD0 citations63
US12422763B2Sep 23, 2025

Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer

POWDERTECH CO LTD0 citations63
US12386281B2Aug 12, 2025

Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer

POWDERTECH CO LTD0 citations63
US12253825B2Mar 18, 2025

Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer

POWDERTECH CO LTD0 citations63
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
US6071663AJun 6, 2000

Carrier for electrophotographic development and electrophotographic developer containing the same

POWDERTECH CO LTD3 citations61
US11029618B2Jun 8, 2021

Carrier, electrophotographic developer and production method of carrier

POWDERTECH CO LTD1 citations58
US11150569B2Oct 19, 2021

Ferrite carrier core material for electrophotographic developer, carrier for electrophotographic developer, and developer

POWDERTECH CO LTD0 citations57
US9329515B2May 3, 2016

Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrier

POWDERTECH CO LTD0 citations52
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
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

HITACHI LTD

11 patents

HITACHI GLOBAL STORAGE TECH

7 patents

NEC CORP

5 patents

TDK CORP

3 patents

UEMURA TETSUYA

3 patents

PANASONIC CORP

1 patent

TSUSHIO KENJI

1 patent