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. 19, 2010
Filed:
May. 18, 2007
Wolfgang Thimm, Karlsruhe, DE;
Wolfgang Thimm, Karlsruhe, DE;
E.G.O. Elektro-Geraetebau GmbH, Oberderdingen, DE;
Abstract
Coatings with left-handed metamaterials (which are man-made materials comprising micro-structures having unusual electro-magnetic properties) are provided around an appliance, such as a hotplate or hob, incorporating induction heating coils that functions as an optical display. In one embodiment, operation of induction heating coils in the cook top alters the optical properties of the metamaterial. Thus, if the metamaterials were previously transparent, they can now become opaque. Doing so changes a display, which can be detected by an operator. This makes it possible to create an automatic operating display for an appliance, such as an induction based hob.