Patent · US Expired

Optical elements

US6333821A · kind A · utility

4Cited by

2References

15Claims

0Family size

Assignee

ALCATEL · FR

Inventors

Hartmut Krüger · Berlin, DE
Waltraud Neumann · Teltow, DE
Andreas Bräuer · Schlöben, DE
Peter Dannberg · Jena, DE

Key dates

Filing date	Jun 15, 2000
Grant date	Dec 25, 2001
Priority date	—
Expiry date	Jun 15, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D167/03
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to optical elements comprised of an optical isotropic completely aromatic polyester with a glass transition temperature T.sub.g.gtoreq.180.degree. C.

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