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. 20, 1996
Filed:
Nov. 23, 1992
Kazuhiko Yasohama, Koganei, JP;
Hiroaki Kohama, Tokyo, JP;
Kaisei Engineer Co., Ltd., Tokyo, JP;
Abstract
An electromotive induction current which is detected by an induction coil placed in an electromagnetic field generated by applying an alternating current to an exciting coil distinctively changes with the frequency of the applied alternating current in accordance with the conditions of an object placed in the electromagnetic field. By analyzing the change in amplitude and/or frequency phase of the electromotive induction current, the physical properties, size and relative position of the object and internal defects such as a crack and pin hole in the object can be measured precisely.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile