Inventor

DANZUKA TOSHIO

JP30 patents

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

DANZUKA TOSHIO

SUMITOMO ELECTRIC INDUSTRIES

Method for producing glass preform for optical fiber

Silica glass article and manufacturing process therefor

Method for producing glass preform for optical fiber

Optical fiber and method of manufacturing the same

Silica glass article and manufacturing process therefor

Process for producing optical fiber preform

Method for drawing glass preform for optical fiber

Method for elongating glass preform

Method of manufacturing single-mode optical fiber

Process for consolidation of porous preform for optical fiber

Method and apparatus for drawing glass preform for optical fiber

Method of manufacturing hermetic coating optical fiber

Method for producing glass preform for optical fiber

Raw material supplying device and process

Process for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradient

Method for flame abrasion of glass preform

Apparatus and method of manufacturing fiber

Method for producing glass preform for optical fiber

Method for producing porous glass preform for optical fiber

Method for producing glass preform for optical fiber

Silica glass article and manufacturing process therefor

Method of flame abrasion of glass preform

Apparatus for vitrifying soot preform for optical fiber

Optical fiber preform manufacturing apparatus which measures a vertical load with three cells

Apparatus for the production of hermetically coated optical fiber

Apparatus of manufacturing hermetic coating optical fiber

Method for producing glass preform for optical fiber

Method for producing glass article

Method for producing glass soot deposit

SUMIMOTO ELECTRIC IND LTD

Method for producing glass preform for optical fiber