Inventor

ITO MASABUMI

JP13 patents

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

ASAHI GLASS CO LTD

7 patents

US5538579AJul 23, 1996

Method of processing a plurality of glass plates or the like into a circular shape or a method of perforating a plurality of the same material

ASAHI GLASS CO LTD28 citations92

US7923178B2Apr 12, 2011

Glass substrate for mask blank and method of polishing for producing the same

ASAHI GLASS CO LTD7 citations83

US7622050B2Nov 24, 2009

Process for polishing glass substrate

ASAHI GLASS CO LTD16 citations83

US7901843B2Mar 8, 2011

Process for smoothing surface of glass substrate

ASAHI GLASS CO LTD5 citations62

US7629089B2Dec 8, 2009

Low-expansion glass substrate for a reflective mask and reflective mask

ASAHI GLASS CO LTD2 citations61

US7959493B2Jun 14, 2011

Method for polishing glass substrate and process for producing glass substrate

ASAHI GLASS CO LTD3 citations59

US7771603B2Aug 10, 2010

Process for polishing glass substrate

ASAHI GLASS CO LTD0 citations52

AGC INC

2 patents

US12392933B2Aug 19, 2025

Glass plate structure and on-vehicle display device

AGC INC0 citations46

US11090767B2Aug 17, 2021

Curved plate machining apparatus, and method of manufacturing curved plate with machined outer circumference

AGC INC0 citations46

KOJIMA HIROSHI

1 patent

US8070557B2Dec 6, 2011

Method of polishing glass substrate

KOJIMA HIROSHI11 citations83

OTSUKA KOJI

1 patent

US8137574B2Mar 20, 2012

Processing method of glass substrate, and highly flat and highly smooth glass substrate

OTSUKA KOJI4 citations62

ONO MOTOSHI

1 patent

US8148037B2Apr 3, 2012

Optical component for EUVL and smoothing method thereof

ONO MOTOSHI3 citations61

OKAMURA KENJI

1 patent

US8524422B2Sep 3, 2013

Low expansion glass substrate for reflection type mask and method for processing same

OKAMURA KENJI0 citations51