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:
Feb. 25, 2003
Filed:
Mar. 15, 2001
Ralf Birken, Boston, MA (US);
Thorkild Hansen, Brighton, MA (US);
Witten Technologies Inc., Boston, MA (US);
Abstract
An apparatus and method for locating subsurface objects using an induction array system is presented. The system uses a movable array that contains two or more spatially separated receivers and one or more spatially separated transmitters. The spatial separation permits the array to detect objects at varying depths with a single pass of the device over the surface area under investigation. If multiple transmitters are used, then they may either be operated simultaneously at different frequencies or sequentially at the same frequency. The spacing between receiver and transmitter elements in the induction array may be uniform or non-uniform.