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. 10, 1976
Filed:
Jun. 19, 1974
Applicant:
Inventor:
Edward N Sharpless, Somerville, NJ (US);
Assignee:
Ashley-Butler, Inc., Somerville, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; G01K / ; G01N / ;
U.S. Cl.
CPC ...
428215 ; 2323 / ; 73356 ; 252299 ; 252408 ; 428-1 ;
Abstract
Thermometric compositions for recording changes in temperature comprising a cholesteric liquid crystal system together with a chemically inert substance which is miscible with the crystal system. By varying the amount of the second component in the composition, the clearing point of the composition, that is the temperature at which there is a phase change to the isotropic phase, can be varied in a predictable manner.