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. 14, 1992
Filed:
Sep. 24, 1990
Hans Larker, Robertsfors, SE;
Bertil Mattsson, Robertsfors, SE;
ABB Cerama AB, Robertsfors, SE;
Abstract
An object is manufactured from a powdered ceramic material while using isostatic pressing. The powdered material is thereby supplied with a temporary organic binder and is formed into a preformed powder body (10). A major part of the binder is removed from the preformed powder body by driving off under heating, whereas a minor part of the binder, required for keeping the powder body together, is retained in the powder body. The powder body is provided with a gas-permeable embedding material (14) of glass, the retained minor part of the binder then being removed by additional driving off under heating and preferably by also treating the powder body with the surrounding gas-permeable embedding material with an oxidizing gas. The gas-permeable embedding material is then made gas-impermeable by heating and the preformed powder body, freed from binder, with the surrounding gas-impermeable embedding material is subjected to isostatic pressing.