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:
Mar. 14, 1989
Filed:
Jan. 26, 1988
Joseph K Walker, Jr, Beachwood, OH (US);
ELTECH Systems Corporation, Boca Raton, FL (US);
Abstract
The invention relates to the production of desirably purified refractory metal borides. The method can be used to purify even commercially available material. Careful attention is directed to the oxygen impurity level of the refractory metal boride and such will usually be maximized at a very low level. Critical attention is directed to the oxygen to carbon molar ratio. Heating of impure materials, typically presented in consolidated form and having constituent adjustments in accordance with invention principles, can lead to the preparation of products of highly desirable density, on the one hand, and prepare products of extremely low contamination levels, on the other hand.