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:
Oct. 27, 1992
Filed:
Mar. 14, 1991
Applicant:
Inventor:
Charles A Walton, Los Gatos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
34082554 ; 34082564 ; 343788 ;
Abstract
A proximity identification system incorporating ferrite rods. The rods are used in both the reader and the tag and additional rods may be used to strengthen and concentrate the flux field in the regions near the reader to obtain better performance in such regions. A coding system requiring minimum power for the tag is also described.