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:
Jan. 11, 2000
Filed:
Jun. 27, 1997
Joseph F Meyers, Grand Prairie, TX (US);
Joseph M Wright, Southlake, TX (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Methods useful in the manufacture of phosphate bonded ceramics. The invention is a method for impregnation of a green body to be fired to form a ceramic having the steps of: (a) forming a green body of unreacted ceramic materials; (b) determining the pore volume of the green body; (c) determining the amount of phosphoric acid required to react with the green body at a desired level; (d) making in impregnation solution of phosphoric acid and a carrier liquid having a ratio of phosphoric acid to carrier liquid equal to the ratio of (i) the volume of phosphoric acid determined for the reaction with the green body to (ii) the volume of carrier fluid equal to the pore volume of the green body minus the volume of the phosphoric acid determined for the reaction; (e) impregnating the green body with said solution of phosphoric acid and carrier fluid; and (f) firing the impregnated green body to form a phosphate bonded ceramic.