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. 07, 1995
Filed:
Mar. 10, 1993
Applicant:
Inventors:
Douglas C Arndt, Thousand Oaks, CA (US);
Bruce H Gindelberger, San Diego, CA (US);
Assignee:
Identicator Corporation, San Bruno, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41K / ; B05C / ; C09C / ;
U.S. Cl.
CPC ...
118 315 ; 118264 ; 118268 ; 118270 ; 106477 ;
Abstract
A fingerprint ink dispensing apparatus includes a ceramic disk positioned over an ink reservoir in the form, for example, of a felt pad. The ceramic disk has an average porosity of about 40% and an average pore size of about 5 microns. A colored pigment such as carbon black dispensed in a hydrocarbon oil is disposed in the reservoir with the concentration of the carbon black being about 22% by weight and the diameter of the carbon black particles falling within the range of 0.15 to 0.60 microns and the average size being about 0.35 microns.