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. 29, 2018
Filed:
Jul. 19, 2011
Applicant:
Ytsen Wielstra, Drachten, NL;
Inventor:
Ytsen Wielstra, Drachten, NL;
Assignee:
KONINKLIJKE PHILIPS N.V, Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/78 (2006.01); C02F 1/46 (2006.01); F24D 19/00 (2006.01); F24H 9/00 (2006.01);
U.S. Cl.
CPC ...
H05B 3/78 (2013.01); C02F 1/4602 (2013.01); F24D 19/0092 (2013.01); F24H 9/0047 (2013.01); C02F 2201/46125 (2013.01); C02F 2201/46175 (2013.01); C02F 2209/02 (2013.01); C02F 2209/05 (2013.01); C02F 2209/06 (2013.01); C02F 2303/22 (2013.01); C02F 2307/04 (2013.01); C02F 2307/12 (2013.01);
Abstract
The invention provides a method of using a water heater arranged for heating an aqueous liquid wherein the water heater comprises a heating element to heat aqueous liquid in the water heater. The method comprises (a) heating aqueous liquid in the water heater with the heating element), wherein the heating element is in contact with the aqueous liquid; and (b) applying a first AC voltage between the heating element and a counter electrode, and applying a DC voltage between the heating element and the counter electrode, wherein the DC voltage is at least 0.5 V, and wherein the heating element is chosen as positive electrode.