Inventor
FUJIHARA Yoshimasa
JP26 patents
⚠️ This page may combine multiple inventors who share the name “FUJIHARA Yoshimasa”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJIFILM BUSINESS INNOVATION CORP
23 patentsUS11353803B2Jun 7, 2022
Toner for electrostatic image development, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP2 citations73
US11048183B2Jun 29, 2021
Electrostatic-image developing toner, electrostatic-image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP2 citations73
US12541158B2Feb 3, 2026
Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12455514B2Oct 28, 2025
Electrostatic image developing toner, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12314003B2May 27, 2025
Electrostatic image developing toner and electrostatic image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12282292B2Apr 22, 2025
Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12222676B2Feb 11, 2025
Preparing method of electrostatic charge image developing toner, electrostatic charge image developing toner, and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US12050433B2Jul 30, 2024
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US11906928B2Feb 20, 2024
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US11550236B2Jan 10, 2023
Toner for electrostatic image development, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations62
US11531284B2Dec 20, 2022
Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP1 citations62
US11392052B2Jul 19, 2022
Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP1 citations62
US12517443B2Jan 6, 2026
Method for producing toner for developing electrostatic charge images, toner for developing electrostatic charge images, and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US12461460B2Nov 4, 2025
Method for producing electrostatic charge image developing toner
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US12436477B2Oct 7, 2025
Electrostatic image developing toner, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US12189334B2Jan 7, 2025
Electrostatic charge image developing toner and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11829103B2Nov 28, 2023
Electrostatic image developing toner, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11809130B2Nov 7, 2023
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11733618B2Aug 22, 2023
Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11698593B2Jul 11, 2023
Toner for electrostatic image development, electrostatic image developer, and toner cartridge
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11675284B2Jun 13, 2023
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations52
US11892800B2Feb 6, 2024
Method for producing toner for electrostatic charge image development, toner for electrostatic charge image development, and electrostatic charge image developer
FUJIFILM BUSINESS INNOVATION CORP0 citations51
US11550235B2Jan 10, 2023
Electrostatic image developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJIFILM BUSINESS INNOVATION CORP0 citations51
FUJI XEROX CO LTD
3 patentsUS10928745B2Feb 23, 2021
Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJI XEROX CO LTD2 citations73
US10571820B2Feb 25, 2020
White toner for electrostatic latent image development, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJI XEROX CO LTD1 citations61
US11693330B2Jul 4, 2023
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
FUJI XEROX CO LTD0 citations52