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:
Aug. 07, 1990
Filed:
Feb. 10, 1989
Applicant:
Inventor:
Akira Hattori, Ashiya, JP;
Assignees:
Yamaguchi Yakuhin Shokai Ltd., Osaka, JP;
Japan Capsular Products, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128736 ; 128716 ; 374162 ; 374186 ;
Abstract
A rhinological diagnostic device in the form of a multi-layer sheet comprising, from top to bottom, a transparent plastic layer, a thermochromic liquid crystal layer, a black coating layer and a support layer. In use, this multi-layer sheet is positioned beneath the nose to cause expired air from the nostrils to impinge on the transparent plastic layer for diagnosing an abnormality in the nasal cavity based on the resulting topographic color pattern in said thermochromic liquid crystal layer.