×

Control of microwave interactive heating by patterned deactivation

DC
  • US RE34,683 E
  • Filed: 02/28/1991
  • Issued: 08/02/1994
  • Est. Priority Date: 03/10/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. A microwave interactive heating element capable of converting microwave radiation to heat energy to heat a food product proximate to said heating element, wherein said element is formed of a layer of microwave interactive material supported on a substrate and said element includes a plurality of first areas having a reduced capability to generate heat in response to microwave radiation and a plurality of second areas having an unaltered capability to generate heater in response to microwave radiation arranged in a predetermined pattern relative to said first areas, wherein said pattern is formed by selectively deactivating without removing selected areas of said microwave interactive material from said substrate in the predetermined pattern to form said first areas and by leaving the remainder of said predetermined pattern untreated to form said second areas, thereby producing preselected temperature differences in said food product corresponding to said pattern when said heating element is subjected to microwave radiation.

View all claims
  • 14 Assignments
Timeline View
Assignment View
    ×
    ×