Patent · US Expired

Polishing composition

US6027669A · kind A · utility

33Cited by
4References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 5, 1997
Grant dateFeb 22, 2000
Priority date—
Expiry dateDec 5, 2017

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09G1/02
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A polishing composition comprising fumed silica, a basic potassium compound and water, of which the specific electric conductivity is from 100 to 5,500 .mu.S/cm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.