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:
Jun. 28, 1983
Filed:
Dec. 10, 1980
Applicant:
Inventors:
Joseph V Gaven, Jr, Oakton, VA (US);
Chan S Bak, Newbury Park, CA (US);
Assignee:
Spectro-Systems, Incorporated, Oakton, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K / ; G01K / ; G01K / ;
U.S. Cl.
CPC ...
374160 ; 73151 ; 116217 ; 374104 ; 374141 ;
Abstract
Minute durable plate-like thermal indicators are employed for precision measuring static and dynamic temperatures of well drilling fluids. The indicators are small enough and sufficiently durable to be circulated in the well with drilling fluids during the drilling operation. The indicators include a heat resistant indicating layer, a coacting meltable solid component and a retainer body which serves to unitize each indicator and which may carry permanent indicator identifying indicia. The indicators are recovered from the drilling fluid at ground level by known techniques.