Inventor

UMEYAMA TATSURO

JP4 patents

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

HOYA CORP

2 patents

US6782717B2Aug 31, 2004

Method for manufacturing glass substrate of information recording medium

HOYA CORP22 citations91

US7140203B2Nov 28, 2006

Method for manufacturing glass substrate of information recording medium

HOYA CORP16 citations82

NIPPON SHEET GLASS CO LTD

2 patents

US6475599B1Nov 5, 2002

Substrate for information recording media

NIPPON SHEET GLASS CO LTD17 citations83

US6715318B2Apr 6, 2004

Glass substrate for information recording media and manufacturing method thereof

NIPPON SHEET GLASS CO LTD8 citations72