Linear polishing sheet with window
US6991517B2 · kind B2 · utility
27Cited by
53References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2004 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Mar 31, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/30625
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polishing article for chemical mechanical polishing. The polishing article includes a generally elongated polishing sheet with a polishing surface. The polishing article is formed from a material that is substantially opaque, and has a discrete region extending substantially the length of the polishing sheet that is at least semi-transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.