The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2002
Filed:
Jul. 31, 2000
Shiuh-Hui Steven Chen, Lake Zurich, IL (US);
Yanling Kang, Northbrook, IL (US);
Sut-Mui Tang, Buffalo Grove, IL (US);
Joe P. Wang, Long Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A reliable sensor provides a user-friendly semiconductor sensing device and transducer which accurately detects the characteristics of a fluid, such as pressure and strain, at high temperature operating conditions. The high performance sensor is particularly useful for use with diesel engines and internal combustion engines in vehicles. The sensor can comprise a single die with a transverse strain gauge or a group of strain gauges which are located at a position on the die to help minimize electric effects of thermal stress on the gauges during pressure detection and operation of the vehicle. The die can be glass fused, such as by glass frit, to a diaphragm, such as a stainless steel diaphragm, so as not to readily corrode in the fluid.