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:
Sep. 14, 1976
Filed:
Dec. 18, 1975
Shinichi Kishimoto, Uji, JA;
Hiroshi Yamamoto, Kyoto, JA;
Abstract
A test strip of the type which is dipped into a liquid such as urine for indicating by color information with respect to the liquid. The test strip has a transparent backing on one side of which is located a color-reaction paper with a fastening layer situated between the paper and the backing for fastening the paper to the backing. The fastening layer is opaque and non-reflecting with respect to light, so that while light can pass freely through the backing it will reflected by the color-reaction paper without passing through the backing. The test strip is moved perpendicularly across an optical axis along which light is directed with the light traveling first through the transparent backing and then being reflected by the color-reaction paper. Signals are generated from the light passing through the backing and the light reflected by the color-reaction paper, with the timing of the signal from the reflected light being controlled by the signal from the light which has passed through the transparent backing. The signal from the light which has traveled through the backing is utilized to initiate a time interval after which the signal from the reflected light is generated so as to assure that the operation of the structure providing the signal from the reflected light takes place when the color-reaction paper intersects the optical axis.