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US 5,542,599 AGranted
Biodegradable thermally insulated beverage cup
OwnerRonald E. Sobolinventor
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a beverage cup which is composed essentially of biodegradable paper elements and is thermally insulated to both preserve the thermal state of beverages contained therein and to render the cup comfortable in its use.
Claims11
A thermally insulated beverage cup comfortable to handle and being composed essentially of biodegradable paper elements, said cup comprising:
- an inner side wall element having upper and lower margins defining the upper rim and bottom margin, respectively, of said cup;
- a continuously circumscribing spacer means element composed of dimpled paperboard and being adhesively secured to the exterior of said inner side wall element, at least a portion of the dimples of said spacer means element defining a plurality of thermally insulative spaces between said inner side wall element and said spacer means;
- and
- a fluid tight bottom closure of said inner side wall element.
1 more element
Dependencies are inferred from the claim text.