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:
Sep. 10, 2002
Filed:
May. 30, 2000
Applicant:
Inventors:
Hirokazu Yoshida, Misato, JP;
Akira Shimotori, Hachioji, JP;
Assignee:
Nireco Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/726 ; G01R 2/728 ;
U.S. Cl.
CPC ...
G01R 2/726 ; G01R 2/728 ;
Abstract
The edge portion of an electro-conductive material inserted between a pair of the transmitting electrodes of triangular plate disposed flatly in opposite directions each other and the receiving electrode. The exciting signal source applies respectively the alternating voltage signal S with frequency f on one of the transmitting electrodes and the alternating voltage signal S with frequency f on the other transmitting electrode. The insertion extent of the strip edge of the electro-conductive material is evaluated with the ratio between the current I with frequency f and the current I with frequency f generated on the receiving electrode.