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:
Mar. 02, 2004
Filed:
Feb. 05, 2002
Applicant:
Inventor:
Theodore R. Anderson, Brookfield, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/26 ; H01Q 1/112 ;
U.S. Cl.
CPC ...
H01Q 1/26 ; H01Q 1/112 ;
Abstract
A near-field plasma reader detects magnetic induction interference with objects having corresponding sensed loops to provide detection and communication between the reader and objects incorporating the sensed loops. The plasma reader has two or more plasma loop sensors in different orientations that are sequentially switched to scan across a range of directions without interference from adjacent loop antennas. The plasma reader is used for inventorying items, store checkouts and other wireless transactions.