Inventor
ISHIGURO YOICHI
JP36 patents
⚠️ This page may combine multiple inventors who share the name “ISHIGURO YOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
35 patentsUS4969941ANov 13, 1990
Furnace for heating glass preform for optical fiber and method for producing glass preform
SUMITOMO ELECTRIC INDUSTRIES75 citations96
US4822399AApr 18, 1989
Glass preform for dispersion shifted single mode optical fiber and method for the production of the same
SUMITOMO ELECTRIC INDUSTRIES63 citations96
US6076376AJun 20, 2000
Method of making an optical fiber having an imparted twist
SUMITOMO ELECTRIC INDUSTRIES29 citations93
US5364428ANov 15, 1994
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES24 citations92
US5320659AJun 14, 1994
Method of forming a carbon coated optical fiber with co-current reactant flow
SUMITOMO ELECTRIC INDUSTRIES34 citations92
US5281247AJan 25, 1994
Method for producing hermetic coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES22 citations92
US5217516AJun 8, 1993
Method of making optical glass article
SUMITOMO ELECTRIC INDUSTRIES39 citations92
US5208645AMay 4, 1993
Method and apparatus for optically measuring the thickness of a coating
SUMITOMO ELECTRIC INDUSTRIES29 citations92
US5158587AOct 27, 1992
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES34 citations92
US5145507ASep 8, 1992
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES38 citations92
US5114338AMay 19, 1992
Furnace for heating highly pure quartz preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES32 citations92
US5055121AOct 8, 1991
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES31 citations92
US5053068AOct 1, 1991
High pressure fluorine method for producing preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES22 citations92
US5018824AMay 28, 1991
Process for fusion-splicing hermetically coated optical fibers
SUMITOMO ELECTRIC INDUSTRIES38 citations92
US5627930AMay 6, 1997
Arrayed optical fiber coupler and method of manufacturing the same
SUMITOMO ELECTRIC INDUSTRIES24 citations91
US5296011AMar 22, 1994
Method of manufacturing hermetic coating optical fiber
SUMITOMO ELECTRIC INDUSTRIES17 citations82
US5035484AJul 30, 1991
Method and apparatus for producing coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES14 citations82
US4846867AJul 11, 1989
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES21 citations82
US5125066AJun 23, 1992
Fiber optical amplifier
SUMITOMO ELECTRIC INDUSTRIES21 citations81
US6347537B1Feb 19, 2002
Method of drawing a twisted optical fiber
SUMITOMO ELECTRIC INDUSTRIES12 citations74
US5163987ANov 17, 1992
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES11 citations74
US5022904AJun 11, 1991
Method of making optical glass article
SUMITOMO ELECTRIC INDUSTRIES16 citations74
US4765815AAug 23, 1988
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES13 citations74
US4664690AMay 12, 1987
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES9 citations74
US5620494AApr 15, 1997
Method for manufacturing optical fiber coupler
SUMITOMO ELECTRIC INDUSTRIES8 citations73
US5265179ANov 23, 1993
Method of manufacturing fiber-optic collimators
SUMITOMO ELECTRIC INDUSTRIES8 citations73
US5235666AAug 10, 1993
Production of a hermetically coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES11 citations73
US5203899AApr 20, 1993
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES19 citations73
US5194080AMar 16, 1993
Apparatus for producing hermetic coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES7 citations73
US5157755AOct 20, 1992
Hermetically coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES11 citations73
US5032079AJul 16, 1991
Furnace for producing high purity quartz glass preform
SUMITOMO ELECTRIC INDUSTRIES17 citations73
US5338328AAug 16, 1994
Apparatus of manufacturing hermetic coating optical fiber
SUMITOMO ELECTRIC INDUSTRIES4 citations63
US5348564ASep 20, 1994
Method for manufacturing a hermetically coated optical fiber
SUMITOMO ELECTRIC INDUSTRIES4 citations62
US4655808AApr 7, 1987
Method for producing glass preform for optical fiber
SUMITOMO ELECTRIC INDUSTRIES6 citations62
US5357334AOct 18, 1994
Spectroanalyzer correcting for deterioration of transmissibility
SUMITOMO ELECTRIC INDUSTRIES3 citations55