Inventor

YOKOYAMA MASAAKI

JP30 patents

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

YOKOYAMA MASAAKI

MITA INDUSTRIAL CO LTD

Information recording medium and information recording method

Information recording medium including an organic polysilane and an oxo metallic phthalocyaning

Photosensitive material for electrophotography comprising a charge transport layer comprising an organopolysilane and diphenoquinone

Optical sensor and thermal sensor

KAKEN PHARMA CO LTD

Cephalosporin compounds, and antibacterial agents

Cephalosporin compounds, processes for their preparation and antibacterial agents

Cephalosporin compounds

JAPAN SCIENCE & TECH CORP

Method for detecting gas with the use of photocurrent amplification and the like and gas sensor

Multiplication device comprising resin-dispersed organic semiconductor film and method for producing the same

Organic photocurrent multiplication device

HITACHI LTD

Semiconductor device and video camera unit having the same and method for manufacturing the same

Video camera unit having an airtight mounting arrangement for an image sensor chip

NIPPON PAINT CO LTD

Method for forming thin film pattern

Method of forming color pattern on a polysilane layer

MORI SEIKI SEISAKUSHO KK

Method and apparatus for calculating correction value for thermal displacement in machine tool

Numerical control apparatus for machine tool

TOA GOSEI CHEM IND

Photoreceptor containing carrier transport with polysilane and phenylene diamine

Method for producing electrophotographic photoreceptor and apparatus used therefor

JAPAN SCIENCE & TECH AGENCY

Photoelectric current multiplier using molecular crystal and production method therefor

Photoelectric current multiplier using molecular crystal and production method therefor

BADISCHE YUKA CO LTD

Cooling process suitable for foam molding of a synthetic resin and its cooling apparatus

MITSUBISHI CHEMICAL BASF COMPA

Expanded resin beads

YOKOYAMA MASAAKI

Transistor and process of producing the same, light-emitting device, and display

KYOCERA MITA CORP

Electrophotosensitive material using quinone derivative

SUMITOMO METAL IND

Method of feeding material to hot forging machine

SUMIMOTO METAL IND LTD

Method of feeding material to hot forging machine

SHIZUOKA PREFECTURE

Method for extracting lipid mixture containing phospholipids comprising polyunsaturated fatty acids from viscera of fish, method for preserving viscera prior to extraction, and lipid mixture extracted thereby

JSP CORP

Polyolefin resin molding composite

SUMITOMO CHEMICAL CO

Organic light-light conversion device

MORITA YASUSHI

Organic semiconductor material with neutral radical compound of a trioxotriangulene derivative as a semiconductor material