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:
Feb. 05, 1991
Filed:
Feb. 02, 1989
Applicant:
Inventors:
Bo G Joelsson, .ANG.by, SE;
Mats Idebro, Norrkoping, SE;
Assignee:
U.S. Philips Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 / ; 219 / ;
Abstract
A microwave oven for heating food, in which power control is by pulsing a microwave source during a sequence of operation periods. The start moment of the microwave source is sensed during each operation period, and the switch on time of the microwave source during each operation period is calculated from the sensed start moment. Start moment related variations in supplied average power level are eliminated.