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:
Dec. 09, 1986
Filed:
Oct. 31, 1985
Applicant:
Inventor:
Roger I Burrows, Manhattan Beach, CA (US);
Assignee:
Price/Stern/Sloan Publishers, Inc., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
434337 ; 235462 ; 235468 ; 235489 ; 235494 ; 382 12 ; 283 93 ; 283 94 ; 283 88 ; 283901 ;
Abstract
A printed substrate has areas printed in a screen of carbon black ink dots and other areas printed in a corresponding screen of infrared transparent ink dots, whereby, the presence of the carbon black ink dots is made visually undetectable but can readily be detected by an infrared emitter and detector.