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. 27, 2012
Filed:
Apr. 10, 2008
Applicant:
John Bond, Northampton, GB;
Inventor:
John Bond, Northampton, GB;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/117 (2006.01); G03G 13/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of and apparatus () for locating and detecting a fingerprint deposited on a surface (), the method comprising setting up an electric field such that a differential charge density is produced coincident with the location of a fingerprint deposited on the surface. By deploying a conductive powder or other detection element selectively attractable to the surface () coincident with the differential charge density in the region of the fingerprint deposit a fingerprint deposited on the surface () is located and detected.