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. 13, 2007
Filed:
Apr. 03, 2003
Applicants:
Frode Røed, Stavanger, NO;
Sigve Sandvik, Sandnes, NO;
Inventors:
Frode Røed, Stavanger, NO;
Sigve Sandvik, Sandnes, NO;
Assignee:
National Oilwell Norway AS, , NO;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 13/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and a device for determining if or where a person () is located within an area (), wherein a foot transceiver () connected to the person () activates one or several identifiable transponders () placed in the area (), after which the activated transponder(s) () emit an identifiable signal, preferably via the foot transceiver (), onto a main receiver/transmitter (), each of the received signals then being referred to a known position.