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:
Nov. 15, 2016
Filed:
Nov. 11, 2004
Applicants:
Pieter Johannes Werkman, Singapore, SG;
Roel Rethmeier, Drachten, NL;
Inventors:
Pieter Johannes Werkman, Singapore, SG;
Roel Rethmeier, Drachten, NL;
Assignee:
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/26 (2006.01); H05B 3/16 (2006.01); D06F 75/24 (2006.01);
U.S. Cl.
CPC ...
D06F 75/24 (2013.01); H05B 3/262 (2013.01); Y10T 29/49083 (2015.01);
Abstract
A heating element and a method of manufacturing the heating element including an aluminum substrate, an electrically insulating layer based on a sol-gel precursor, and an electrically resistive layer with a thickness smaller than 2 μm. The features of this heating element solve the problem of the crack formation due to a mismatch of thermal expansion coefficient of the aluminum substrate and the resistive layer. Also an electrical domestic appliance including the heating element.