Patent · US Expired

High index and high impact resistant polythiourethane/urea material, method of manufacturing same and its use in the optical field

US7767779B2 · kind B2 · utility

18Cited by
12References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 14, 2001
Grant dateAug 3, 2010
Priority date—
Expiry dateNov 14, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B1/041
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A transparent, non elastomeric, high index, impact resistant polythiourethane/urea material comprising the reaction product of:

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