Microwavable food storage container
US6649891B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J36/027
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A food container for use in a microwave oven is made from an inner, food contacting, glass vessel an outer plastic vessel. Because of the external plastic layer, the container has a significantly higher thermal insulating capability than a comparable glass container. This reduces the cooling rate of cooked food and provides an extra margin of handling safety. On the other hand, the internal glass vessel will not impart a plastic flavor to food stored or cooked in the vessel, and will be immune to the blistering or discoloration that sometimes occurs with plastic vessels. In some versions of the invention, free-standing glass and plastic vessels are arranged to be interfitted for use in food storage and microwave cooking, but can be easily separated for cleaning. In other versions, the glass and plastic vessels are intimately bonded together to prohibit penetration of moisture between the two vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.