Substrate selector
US6801824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Substrate-selecting equipment selects substrates used for objective products from among a group of substrates with photosensitive material layers used for the production of photomask. The substrate-selecting equipment comprises one or more of the defect-registering part(s) for registering the results of the inspection of defects of substrates with photosensitive material layers in database, the photosensitive material layer lot check result-registering part for registering the results of check of lots of photosensitive material layers in database and the substrate-selecting part for selecting substrates used for the production of objective products from among a group of substrates with photosensitive material layers, on the basis of the results of inspection of defects and the results of check of lots of photosensitive materials registered in database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.