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:
Oct. 23, 2007
Filed:
May. 28, 2001
Rudolf Ehwald, D-10115 Berlin, DE;
Karl-ernst Ehwald, D-15234 Frankfurt/Oder, DE;
Dieter Knoll, D-15230 Frankfurt/Oder, DE;
Wolfgang Winkler, D-15234 Frankfurt/Oder, DE;
Henning Zinke, D-15236 Frankfurt/Oder, DE;
Rudolf Ehwald, D-10115 Berlin, DE;
Karl-Ernst Ehwald, D-15234 Frankfurt/Oder, DE;
Dieter Knoll, D-15230 Frankfurt/Oder, DE;
Wolfgang Winkler, D-15234 Frankfurt/Oder, DE;
Henning Zinke, D-15236 Frankfurt/Oder, DE;
Other;
Abstract
An apparatus for measuring the viscosity of a fluid having a first rigid member extending from a body of semiconductor material and provided with a first conductive path and a second resiliently flexible member provided with a second conductive path and arranged in cantilever fashion over the rigid member. At least one of the conductive paths may be selectively energized to brig about relative movement between the rigid and flexible member. Subsequent deenergization of the path causes the resiliently flexible member to return to its initial position, the rate of return being measured to derive a signal representative of the viscosity. Also described are methods of carrying out the measurement and of fabricating the apparatus.