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:
Apr. 05, 1977
Filed:
Jan. 08, 1976
Applicant:
Inventors:
Jerome Greyson, Elkhart, IN (US);
Sisto Nicholas Stiso, Elkhart, IN (US);
Assignee:
Miles Laboratories, Inc., Elkhart, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
73 3 / ; 2323 / ; 2325 / ; 73 643 ;
Abstract
Devices and methods are provided for determining specific gravity or osmolality of liquids. The preferred devices comprise a carrier matrix incorporated with microcapsules having osmotically fragile, semipermeable polymeric membrane walls encapsulating therein a solute and a coloring substance. In use, the test device is contacted with the liquid to be tested, and color change on the carrier matrix is observed as a measure of the specific gravity or osmolality of the liquid.