Patent ID: 9332595
Filing Date: 2016-05-03
CPC Classification: H05B

Claim Text:
1. A heat retaining device comprising: a biodegradable enclosure member having a cylindrical shape with an external cavity along the side thereof so that a handle of a mug can protrude therefrom, thus an overhead view of the container is a C-shape with the opening of the C being the external cavity and a thickness of the C near the opening of the C being less than a thickness of the C distal from the opening of the C, including an exterior and an internal side chamber forming the C-shape of the enclosure; a base, including an internal base chamber, and a quantity of granular heat retention material within said internal side chamber and said internal base chamber, said heat retention material being capable of being heated by thermal energy radiation and of retaining heat in a latent state.