Patent · US Expired

Magnetic gate and method of production thereof

US4394190A · kind A · utility

2Cited by

1References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wilhelm Ertl · Ottobrunn, DE
Ulrich Lachmann · Munich, DE
Heinrich Pertsch · Munich, DE

Key dates

Filing date	Jan 16, 1981
Grant date	Jul 19, 1983
Priority date	—
Expiry date	Jan 16, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49105
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Magnetic gate, including a magnet having a magnetic pole with an at least partly flat surface, a semiconductor chip having an integrated circuit, a mechanically permeable metal piece, and means attaching the semiconductor chip to the magnetically permeable metal piece for minimizing mechanical stresses acting on the chip to eliminate piezo effects and method of production thereof.

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