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. 08, 2013
Filed:
Jan. 29, 2008
Cornelius Boerner, Kuchen, DE;
Guenter Buehlmaier, Geislingen, DE;
Wolfgang Friz, Goeppingen, DE;
Alexander Kiefer, Kuchen, DE;
Martin Neumayer, Gerstetten-Dettingen, DE;
Theda Staudinger, Geislingen, DE;
Cornelius Boerner, Kuchen, DE;
Guenter Buehlmaier, Geislingen, DE;
Wolfgang Friz, Goeppingen, DE;
Alexander Kiefer, Kuchen, DE;
Martin Neumayer, Gerstetten-Dettingen, DE;
Theda Staudinger, Geislingen, DE;
WMF Aktiengesellschaft, Geislingen/Steige, DE;
Abstract
The invention relates to dining and/or serving cutlery made of a steel material which is formed from a ferritic core with an essentially martensitic boundary layer. In the dining and/or serving cutlery of the invention, the surface hardness of the boundary layer, determined according to the hardness test according to Vickers HV 3, is thereby greater by 30 to 300% than the lowest hardness of the core, likewise measured according to Vickers HV 3.