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:
Oct. 12, 1999
Filed:
Oct. 17, 1997
Devi Chalasani, Painted Post, NY (US);
Ronald E Johnson, Tioga, PA (US);
Corning Incorporated, Corning, NY (US);
Abstract
A method for extruding a stiffer powder mixture at lower extrusion pressure involves providing an aqueous mixture of inorganic powder that can be metal, ceramic, glass, glass ceramic, molecular sieve, and/or carbon, fatty acid the main chain of which has at least 12 carbon atoms, thermally gellable cellulose ether binder, and wax that can be paraffin and/or propylene glycol hydroxystearate, wherein the powder is coated with the fatty acid component. If clay is included in the mixture, it is provided as either calcined or hydrous. The mixture is passed through an extruder and through an extrusion die to produce a green extrudate at an extrusion pressure that is equal to or lower than it would be absent the combination of the fatty acid, the cellulose ether binder, and the wax. The mixture in the extruder and the extrudate are stiffer than without this combination.