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:
May. 08, 2001
Filed:
May. 26, 1999
Applicant:
Inventors:
Monika Willert-Porada, Dortmund, DE;
Thorsten Gerdes, Dortmund, DE;
Klaus Dreyer, Essen, DE;
Klaus Rödiger, Bochum, DE;
Udo König, Essen, DE;
Assignee:
Widia GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 9/00 ;
U.S. Cl.
CPC ...
B32B 9/00 ;
Abstract
A composite body of a microwave sintered composition of a cermet or hard metal as a modified surface layer which can promote the microwave sintering and can be of a thickness of 0.01 to 1 mm with a density gradually decreasingly inwardly or a thickness up to 1 mm and having locally distributed compacts therein or which can be a layer of a thickness of 1 to 10 mm of a substantially pure metal or which can have a binder metal removed to a depth of about half the grain thickness of a hard material such as WC.