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. 07, 2001
Filed:
Jul. 31, 1998
Applicant:
Inventors:
Joel C. Mitchell, Bridgman, MI (US);
James L. French, Holland, MI (US);
Assignee:
Leco Corporation, St. Joseph, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
B01L 3/00 ;
U.S. Cl.
CPC ...
B01L 3/00 ;
Abstract
An analytical crucible is made of a ceramic material with openings to allow the escape of gaseous byproducts of combustion through the crucible while holding the sample. In a preferred embodiment, the crucible is made of a porous ceramic material having a mean pore diameter of from about 150 to 350 microns. The porous ceramic crucible is manufactured of a mixture of at least about 92% alumina and about 7.5% silica. In one embodiment, the crucible is generally cup-shaped.