Patent · US Expired

Adapting frequency band of oscillating circuit made from a metal-plastic-metal sandwich foil and sandwich foil for implementing the process

US5165987A · kind A · utility

3Cited by

2References

14Claims

0Family size

Assignee

Swiss Aluminium Ltd. · CH

Inventors

Klaus Oehlmann · Engen, DE
Franz Kolb · Offenburg, DE
Dietrich Bubeck · Singen, DE
Martin Werner · Langenau, DE

Key dates

Filing date	Dec 23, 1991
Grant date	Nov 24, 1992
Priority date	—
Expiry date	Dec 23, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31681
WIPO fieldControl
WIPO sectorInstruments

Abstract

Foil includes a first etch-resistant layer which at least partially covers the neighboring layer and has a weight per unit area of 0.5-20 g/m.sup.2, a first aluminum or aluminum alloy layer having a thickness of about 30 .mu.m to 150 .mu.m, a dielectric layer of plastic having a thickness of about 5 to 100 .mu.m, a second aluminum or aluminum alloy layer having a thickness of about 30 .mu.m to 150 .mu.m, and a second etch-resistant layer which at least partially covers the neighboring layer and has a weight per unit area of 0.5 to 20 g/m.sup.2.

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