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. 23, 1991
Filed:
May. 09, 1990
Applicant:
Inventors:
Jacques Lessi, Maule, FR;
Philippe Perreau, Rueil Malmaison, FR;
Daniel Bary, Rueil Malmaison, FR;
Guy Grard, Argenteuil, FR;
Assignee:
Institute Francais du Petrole, Cedex, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01B / ; G01B / ;
U.S. Cl.
CPC ...
374-6 ; 374 55 ; 374 56 ; 33783 ; 33702 ; 33560 ; 33557 ; 33DI / ;
Abstract
A device and method for measuring the deformations of a sample, which deformations particularly result from the relaxation of the stresses to which the samples was previously subjected. The device and method include the use of a cell inside which the sample is placed with the cell containing a thermal mass whose heat capacity and/or thermal conductibility are appreciably greater than those of air under normal temperature and pressure conditions.