Patent · US Expired

Process and arrangement for the polarization of shaped objects made from polymers

US4381534A · kind A · utility

3Cited by

2References

5Claims

0Family size

Assignee

Akademie der Wissenchaften der DDR · DE

Inventors

Rudi Danz · Kleinmachnow, DE
Wolfgang Stark · Esslingen am Neckar, DE
Burkhard Elling · Potsdam, DE
Christian Ruscher · Teltow, DE
Wolfgang Schwarz · Ludwigshafen, DE

Key dates

Filing date	Dec 12, 1979
Grant date	Apr 26, 1983
Priority date	—
Expiry date	Dec 12, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49226
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a method and an arrangement which are of importance in the polarization of shaped articles from polymers. The shaped articles from polymers, polarized by the method as per invention, are finding effective application in electroacoustic converters, piezoelectric switches and in proving electromagnetic radiation within a broad spectral zone. It is possible to obtain by the method as per invention and, respectively, the arrangement as per invention, above-average values for polarization as well as for the piezoelectrical and pyroelectrical coefficients. The arrangement as described, and respectively, the method as described are characterized by the use of charge-limiting polarization capacitors.

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