Patent · US Expired

Acid anhydride and polyimide using the same

US7193030B2 · kind B2 · utility

2Cited by
5References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 17, 2004
Grant dateMar 20, 2007
Priority date
Expiry dateApr 27, 2025

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K2323/027
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

An acid anhydride of the formula (4), and a polyimide using the acid anhydride,

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