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:
Jul. 18, 1989
Filed:
Jul. 20, 1987
Applicant:
Inventors:
Frederik M Duysings, Houston, TX (US);
David B Baxter, Houston, TX (US);
Chandler H Barkelew, Eugene, OR (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01B / ;
U.S. Cl.
CPC ...
378 54 ; 378 56 ; 2503561 ; 25036301 ;
Abstract
A method and apparatus for detecting blockage of an orifice, such as slag tap of a gasifier, by positioning at least one radiation source and detector in diametrically opposing positions outside the slag tap and out of contact with the molten slag.