Patent · US Active

Method for producing polyimide membranes

US9873093B2 · kind B2 · utility

4Cited by

7References

36Claims

0Family size

Assignee

EVONIK FIBRES GMBH · AT

Inventors

Tymen Visser · Dordrecht, NL
Markus Ungerank · Ansfelden, AT
Jörg Balster · Vöcklabruck, AT
Christoph Führer · Gmunden, AT

Key dates

Filing date	May 22, 2014
Grant date	Jan 23, 2018
Priority date	—
Expiry date	May 22, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/755
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention concerns polyimide membranes, preferably composed of P84 type 70 or P84 HT, having improved chemical and physical properties, a method of producing same and also their use.

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