Inventor
ITOH KATSUHISA
JP13 patents
⚠️ This page may combine multiple inventors who share the name “ITOH KATSUHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOYA CORP
7 patentsUS6042739AMar 28, 2000
Etchant and method for etching chalcogenide glass and optical member having smooth surface
HOYA CORP31 citations92
US6533883B1Mar 18, 2003
Method of manufacturing optical medium
HOYA CORP15 citations84
US6798792B2Sep 28, 2004
Laser device and light signal amplifying device using the same
HOYA CORP15 citations83
US6053012AApr 25, 2000
Method for manufacturing glass preform and glass fiber
HOYA CORP12 citations73
US5917108AJun 29, 1999
Drawing a chalcogenide glass fiber in a sulfur atmosphere
HOYA CORP14 citations73
US5856882AJan 5, 1999
Optical fibers and optical fiber amplifiers
HOYA CORP5 citations62
US5764661AJun 9, 1998
Laser glasses and laser glass fibers
HOYA CORP5 citations62
SUMITOMO LIGHT METAL IND
5 patentsUS4783245ANov 8, 1988
Process and apparatus for producing alloy containing terbium and/or gadolinium
SUMITOMO LIGHT METAL IND26 citations91
US4684448AAug 4, 1987
Process of producing neodymium-iron alloy
SUMITOMO LIGHT METAL IND42 citations91
US4747924AMay 31, 1988
Apparatus for producing neodymium-iron alloy
SUMITOMO LIGHT METAL IND22 citations81
US4521284AJun 4, 1985
Electrolytic method of producing a high purity aluminum-lithium mother alloy
SUMITOMO LIGHT METAL IND9 citations73
US4737248AApr 12, 1988
Process for producing dysprosium-iron alloy and neodymium-dysprosium-iron alloy
SUMITOMO LIGHT METAL IND17 citations72