Method of operating microwave oven and determining the...

Details Method of operating microwave oven and determining the... Method of operating microwave oven and determining the...

2007-05-08

2007-05-08

Leung, Philip H. (Department: 3742)

Electric heating

Microwave heating

With control system

C219S720000, C219S754000, C099S451000, C426S088000, C374S149000

Reexamination Certificate

active

11446935

ABSTRACT:
A method of operating a microwave oven to determine the correct cooking time for a food item placed within the oven. A food package having a thermochromic element which changes color over a predetermined temperature range is placed in the microwave oven. Microwave energy is supplied into the oven. The food package is rotated within the oven cavity and the color of the thermochromic element is monitored as it rotates past an opto-electronic device or detector capable of detecting the color changes of the thermochromic element such that a plurality of signal pulses are generated having a value corresponding to the color of the element. The supply of microwave energy into the oven is terminated when the rate of change between successive pulses decrease to a predetermined value.

REFERENCES:
patent: 5036172 (1991-07-01), Kokkeler et al.
patent: 0272089 (1988-06-01), None
patent: 2312954 (1997-12-01), None
patent: 0302030 (2004-05-01), None
patent: 2005/004543 (2005-01-01), None

Affiliated with

Also associated with

Rating

Method of operating microwave oven and determining the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of operating microwave oven and determining the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating microwave oven and determining the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3799122