Inventor
ERI YOSHIFUMI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “ERI YOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI XEROX CO LTD
15 patentsUS9726998B1Aug 8, 2017
Electrostatic charge image developer, developer cartridge, and process cartridge
FUJI XEROX CO LTD9 citations84
US10100176B2Oct 16, 2018
Resin particle composition
FUJI XEROX CO LTD2 citations73
US10081718B2Sep 25, 2018
Resin particle composition
FUJI XEROX CO LTD2 citations73
US10570020B2Feb 25, 2020
Silica particle and method of preparing silica particle
FUJI XEROX CO LTD0 citations52
US10061216B2Aug 28, 2018
Electrostatic image developer and toner, electrostatic image developer and toner cartridge
FUJI XEROX CO LTD0 citations52
US9946178B2Apr 17, 2018
Toner for electrostatic image development, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJI XEROX CO LTD0 citations52
US9904197B2Feb 27, 2018
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations52
US9891543B2Feb 13, 2018
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations52
US9885966B2Feb 6, 2018
Electrostatic charge image developing toner, electrostatic charge image developer and toner cartridge
FUJI XEROX CO LTD0 citations52
US9864287B2Jan 9, 2018
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD0 citations52
US9835966B2Dec 5, 2017
Electrostatic charge image developer, developer cartridge, and process cartridge
FUJI XEROX CO LTD1 citations52
US9835963B2Dec 5, 2017
Magnetic one-component developer, developer cartridge, process cartridge, image forming apparatus, and image forming method
FUJI XEROX CO LTD0 citations52
US9726994B1Aug 8, 2017
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJI XEROX CO LTD1 citations52
US9785069B2Oct 10, 2017
Image forming apparatus, electrostatic charge image developer, and electrostatic charge image developing toner
FUJI XEROX CO LTD0 citations41
US9058001B2Jun 16, 2015
Image forming apparatus
FUJI XEROX CO LTD0 citations40
FUJIFILM BUSINESS INNOVATION CORP
10 patentsUS12351467B2Jul 8, 2025
Silica particle and method for producing the same
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US11866340B2Jan 9, 2024
Silica particle and method for producing the same
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US11795302B2Oct 24, 2023
Resin particles and method for manufacturing resin particles
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12421396B2Sep 23, 2025
Silica particles and method for producing the same
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12287607B2Apr 29, 2025
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12215033B2Feb 4, 2025
Silica particles comprising nitrogen element-containing compound containing molybdenum element
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12162769B2Dec 10, 2024
Silica particles and manufacturing method thereof
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US12077443B2Sep 3, 2024
Silica particles and method for producing the same
FUJIFILM BUSINESS INNOVATION CORP0 citations61
US11535757B2Dec 27, 2022
Organic substance-attached porous inorganic oxide particle
FUJIFILM BUSINESS INNOVATION CORP0 citations51
US12455515B2Oct 28, 2025
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations50