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. 14, 1987
Filed:
Jun. 06, 1984
Applicant:
Inventors:
Blanton C Wiggin, Wellesley, MA (US);
Julian W Philbrick, Natick, MA (US);
Assignee:
Advanced Instruments, Inc., Needham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
374 25 ; 374 16 ;
Abstract
A method for measuring the freezing point of a liquid utilizing non-adiabatic thermodynamics for the chilling chamber. The temperature of the chilling chamber in which the measurement is made is actively altered to reduce net heat flow from the sample portion of the liquid being measured at least during nucleation of the sample portion. By actively altering the chilling-chamber temperature, the thermodynamics of the sample itself more nearly approach a true adiabatic condition during nucleation. Preferably, the freezing-point measurement is made in the sample-handling or pick-up device itself.