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:
Nov. 05, 1985
Filed:
Feb. 02, 1983
Applicant:
Inventor:
Ryosaku Tagaya, Gunma, JP;
Assignee:
Eisai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356406 ; 250226 ; 2502 / ; 356414 ; 356416 ; 356240 ; 356407 ;
Abstract
For detecting a leaking in a transparent or semi-transparent vessel by the dye bath method, the light passing through the vessel is divided into three wavelength regions, that is light having the characteristic wavelength of the dye bath liquid, the light having a wavelength shorter than said light as much as prescribed wavelength and the light having a wavelength longer than said light as much as prescribed wavelength, the curvature of transmittance curve based upon difference value of transmittance among three light having different wavelength is obtained for comparing with a preestablished value to judge the vessel to be inferior or normal with the compared output.