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. 19, 2008
Filed:
Jul. 19, 2006
Applicants:
James A. Niemann, Aurora, OH (US);
John Gibbons, Macedonia, OH (US);
Kevin Cawley, Sagamore Hills, OH (US);
Wayne C. Goeke, Hudson, OH (US);
Inventors:
James A. Niemann, Aurora, OH (US);
John Gibbons, Macedonia, OH (US);
Kevin Cawley, Sagamore Hills, OH (US);
Wayne C. Goeke, Hudson, OH (US);
Assignee:
Keithley Instruments, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); G01F 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A guarded sense impedance for use in a measurement instrument includes a sense impedance adapted to have a spatially distributed electrical potential and at least one guard structure adapted to have the spatially distributed electrical potential. The guard structure is arranged to provide a spatially distributed guard potential for the sense impedance.