Patent · US Expired

Identification mark operating with acoustic surface waves

US5841214A · kind A · utility

10Cited by

11References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Frank Schmidt · Zorneding, DE
Valentin Magori · Gernsheim, DE
Leonhard Reindl · Kirchzarten, DE
Thomas Ostertag · Ulm, DE

Key dates

Filing date	Aug 22, 1996
Grant date	Nov 24, 1998
Priority date	—
Expiry date	Aug 22, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An identification mark operating with acoustical surface waves includes at least one reflector having higher reflectivity than a reflectivity of other reflectors.

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