Patent · US Expired

Magnetic gate and method of production thereof

US4369376A · kind A · utility

7Cited by

4References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wilhelm Ertl · Ottobrunn, DE
Ulrich Lachmann · Munich, DE
Heinrich Pertsch · Munich, DE
Gunter Wirnharter · Brannenburg, DE

Key dates

Filing date	Jan 16, 1981
Grant date	Jan 18, 1983
Priority date	—
Expiry date	Jan 16, 2001

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/97
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Magnetic gate, including a magnet having two poles, one of the poles having an at least partly flat surfaces, a magnetically permeable metal piece bridging the magnetic flux of the magnet from one to the other of the poles, and a semiconductor chip having an integrated circuit, the semiconductor chip being piezoelectrically unsensitive and being applied to the permeable metal piece, and method of production thereof.

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