Patent name Microwave susceptor packaging material Patent applicant Namur Dupont Company Principal Applicant United States Delaware inventor N.L. Blankenberger Clair; C.-H. Pond Application (Patent) No..2 Date of Application 2003.12 .31 Approval Date Approval Notice No. 1735543 Approval Notice Day 2006.02.15 Instruction CD-ROM D0607-1 Main Classification Number B65D81/34(2006.01) I Classification Number B65D81/34(2006.01)I Division Original Application No. Priority 2003.1. 3 US 60/438,041 Abstract A microwave susceptor material packaging article or ovenware containing discrete regions of at least two susceptor materials, namely an inner susceptor material region and an outer susceptor material, with equal internal and external surface areas and equal microwaves Based on the irradiation, the inner surface has the ability to convert more microwave energy into heat. Sovereignty item 1. A product suitable for heating foods by microwave energy, comprising a substrate supporting the conversion of microwave energy into a thermal susceptor material, wherein the improvement includes the presence of susceptor material in two separate zones, ie, the first zone and A second zone, wherein there is a boundary between the first zone and the second zone, the first zone is at least substantially surrounded by the second zone, and the first and second zones are required to be completely covered by the susceptor material, and wherein On the basis of equal surface area and equal amount of microwave energy irradiating the surface thereof, the first region converts more microwave energy into heat than the second region. International Application 2003-12-31 PCT/US2003/041856 International Publication 2004-08-26 WO2004/071900 English