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:
May. 04, 2004
Filed:
Feb. 14, 2002
Applicant:
Inventors:
Toshiro Uemura, Nisshin, JP;
Yoshitaka Takezawa, Hitachinaka, JP;
Mitsunari Kano, Seto, JP;
Junichi Katagiri, Naka, JP;
Eiji Mizuno, Owariasahi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/155 ;
U.S. Cl.
CPC ...
G01N 2/155 ;
Abstract
A bill discriminating method of discriminating a paper material independent of a light/dense pattern caused by a difference of manufacturing steps and discriminating a paper material of paper without being influenced by humidity or deterioration of the paper material is provided, Two kinds of infrared rays of different kinds of wavelengths are irradiated onto the paper, thereby discriminating the paper material of the paper by using an absorbance difference between photometric values.