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:
Jun. 02, 1992
Filed:
Feb. 06, 1990
Applicant:
Inventor:
Hirohisa Takada, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
235462 ; 235488 ;
Abstract
A retroreflective sheet having an adhesive surface, including a transparent base film, a plurality of small retroreflective members arranged on one surface of the transparent base film, and a transparent bonding agent layer laminated over the small retroreflective members, wherein the exposed laminated layer is adhered to a reflecting surface, thereby forming a retroreflective sheet. Light beams reflected through the retroreflective sheet are substantially collimated with the incident light beams, thereby intensifying the reflected signal and allowing the optical information to be read by a bar code reader from greater distances.