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:
Nov. 14, 2006
Filed:
Sep. 14, 2001
Margo Gisselberg, Lynnwood, WA (US);
Eric Hadford, Everett, WA (US);
Steven C. Dimmer, Bellevue, WA (US);
Jack Goldberg, San Diego, CA (US);
Jeff Pelton, San Diego, CA (US);
Kurt Zublin, Poway, CA (US);
Margo Gisselberg, Lynnwood, WA (US);
Eric Hadford, Everett, WA (US);
Steven C. Dimmer, Bellevue, WA (US);
Jack Goldberg, San Diego, CA (US);
Jeff Pelton, San Diego, CA (US);
Kurt Zublin, Poway, CA (US);
Calypso Medical Technologies, Inc., Seattle, WA (US);
Abstract
A miniature resonating marker assembly that includes, in one embodiment, a ferromagnetic core, a wire coil disposed around the core, and a capacitor connected to the wire coil adjacent to the magnetic core. The core, coil, and capacitor form a signal element that, when energized, generates a magnetic field at a selected resonant frequency. The magnetic field has a magnetic center point positioned along at least one axis of the signal element. An inert encapsulation member encapsulates the signal element therein and defines a geometric shape of the resonating marker assembly. The geometric shape has a geometric center point substantially coincident with the magnetic center point along at least a first axis of the signal element. The shape and configuration of the assembly also provides for a miniature signal element specifically tuned to resonate at a selected frequency with a high quality factor.