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:
Jun. 07, 1994
Filed:
Feb. 03, 1993
Rudolf Schulten, Aachen, DE;
Behzad Sahabi, Aachen, DE;
Harald Lorson, Aachen, DE;
Kusnanto, Aachen, DE;
Antonio M Hurtado, Aachen, DE;
Huls Aktiengesellschaft, Marl, DE;
Abstract
For tempering the surface of a body, the body is covered with a sheath of at least one meltable active substance and binder material and heated under vacuum or in an inert atmosphere first to a temperature whereby the sheath is transformed into a porous cover layer with outer crust. Then the temperature is raised until the meltable active substance contained in the cover layer is evaporated. On the one hand, the meltable active substance seals the outer side of the cover layer, and on the other hand, the meltable active substance produces the tempered surface of the body. After the body has cooled, the residues of the cover layer are removed. The body is provided with a pore-free resistant surface.