Inventor
TORATANI HISAYOSHI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TORATANI HISAYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOYA CORP
12 patentsUS6214429B1Apr 10, 2001
Disc substrates for information recording discs and magnetic discs
HOYA CORP229 citations99
US6063470AMay 16, 2000
Substrate for information recording media and magnetic disc
HOYA CORP59 citations96
US6187407B1Feb 13, 2001
Glass substrate for magnetic recording medium and method of manufacturing the same
HOYA CORP32 citations92
US5981015ANov 9, 1999
Method for selecting a material suitable for a substrate for information recording media, material selected using this method, and magnetic disk formed using this material
HOYA CORP38 citations92
US4217382AAug 12, 1980
Edge-cladding glass of disc laser glass
HOYA CORP36 citations92
US4693910ASep 15, 1987
Process for producing porous antireflective coatings
HOYA CORP43 citations91
US6313947B1Nov 6, 2001
Light polarizing glass containing copper particles and process for preparation thereof
HOYA CORP33 citations89
US4108673AAug 22, 1978
Optical phosphate glass in which the length of the light path is temperature independent
HOYA CORP20 citations73
US5246892ASep 21, 1993
Faraday rotation glass
HOYA CORP7 citations72
US5856882AJan 5, 1999
Optical fibers and optical fiber amplifiers
HOYA CORP5 citations62
US5764661AJun 9, 1998
Laser glasses and laser glass fibers
HOYA CORP5 citations62
US4547402AOct 15, 1985
Method of increasing the thermal shock resistance of phosphate laser glass
HOYA CORP1 citations45