Inventor

YOSHIKAWA MASAO

JP59 patents

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

YOSHIKAWA MASAO

RICOH KK

Organic photovoltaic element

Positively-chargeable single-layered type electrophotographic photoconductor

Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor

Photoelectric transducer element

Photoelectric conversion device

Electric device and photoelectric conversion device comprising the same

Photoelectric conversion element

Electrophotographic photoconductor

Electrophotographic photoconductor

Photovoltaic device containing organic material layers and having high conversion efficiency

Sealing agent for liquid crystal display and liquid crystal display using the sealing agent

N,N&#39;-diphenylbenzidine polymer and method of producing the same

Electrophotographic photoconductor

Electric device

High dielectric polymeric optical recording medium

Copying method and apparatus

Methods for preparing plural layer organic electrophotographic elements

CANON KK

Process cartridge and multi-color image forming apparatus using same

Image forming apparatus employing non-magnetic and magnetic toner

Magnet roll developing apparatus

Electrophotographic apparatus capable of forming images in different colors

Method for forming a thin layer of developer

Device for forming a thin layer of developer

Magnetic developing device with offset magnetic pole

Image forming apparatus

Image forming apparatus with plural developing devices

SHINETSU CHEMICAL CO

Abrasive-bladed cutting wheel

Rare earth-based permanent magnet

Abrasive-bladed multiple cutting wheel assembly

Method for producing a corrosion resistant rare earth-containing magnet

Method for the preparation of a highly corrosion resistant rare earth based permanent magnet

Rare earth permanent magnet of high corrosion resistance

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Air heating apparatus

Television receiver

Television receiver

Television receiver/monitor

Television receiver

PANASONIC CORP

Eyeglasses

Eyeglasses

Eyeglasses

MITSUI TOATSU CHEMICALS

Polyimides, process for the preparation thereof and polyimide resin compositions

Polyimides, process for the preparation thereof and polyimide resin compositions

Polyimides, process for the preparation thereof and polyimide resin compositions

SHARP KK

Image display apparatus

Image display apparatus

YOSHIKAWA MASAO

Remote controller for digital video disc player

FUJITSU LTD

Information processing device, information processing system, and communication device

NTN RULON IND COMPANY LTD

Method for producing a paper-releasing guide-claw of copying machine

TOMEY CORP

Eyeball observing device having an ultrasonic detector

YOBEA RULON KOGYO KK

All-aromatic polyester resin composition

N,N'-diphenylbenzidine polymer and method of producing the same