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. 24, 2004
Filed:
Apr. 03, 2003
Applicant:
Inventors:
Christoph Kleinlogel, Zürich, CH;
Ralph Steiner-Vanha, Zürich, CH;
Felix Mayer, Zürich, CH;
Assignee:
Sensirion AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 3/102 ;
U.S. Cl.
CPC ...
B23K 3/102 ;
Abstract
The invention relates to a flow sensor comprising a substrate with integrated heat source and temperature sensors. Solder bumps are arranged on the heat source and the temperature sensors and the substrate is attached to the outside of a tube using flip chip technology. Preferably, the outside of the tube is structured for being wetted at appropriate positions by the solder. This allows to assemble the sensor easily and accurately.