Inventor

NAGAREKAWA OSAMU

JP4 patents

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

HOYA CORP

2 patents

USD568839SMay 13, 2008

Photomask blank

HOYA CORP9 citations82

USD543160SMay 22, 2007

Photomask blank

HOYA CORP13 citations82

HOYA ELECTRONICS CO LTD

1 patent

US4530891AJul 23, 1985

Photo-mask blank for use in lithography including a modified chromium compound

HOYA ELECTRONICS CO LTD35 citations88

NAGAREKAWA OSAMU

1 patent

US4657648AApr 14, 1987

Method of manufacturing a mask blank including a modified chromium compound

NAGAREKAWA OSAMU18 citations68