Abuse-tolerant metallic packaging materials for microwave cooking
US6204492A · kind A · utility
203Cited by
11References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Sep 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S99/14
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An abuse-tolerant microwave food packaging material includes repeated sets of metallic foil or high optical density evaporated material segments disposed on a substrate. Each set of metallic segments is arranged to define a perimeter having a length equal to a predetermined ratio of the operating, or effective wavelength of a microwave oven. The repeated sets of segments act both as a shield to microwave energy and as focusing elements for microwave energy when used in conjunction with food products yet remaining electrically safe in the absence of the food products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.