Disposable and biodegradable paper cup
US6926197B2 · kind B2 · utility
66Cited by
23References
3Claims
0Family size
Inventors
Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W90/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drinking cup has sandwiched between an inner paper liner and an outer paper shell a ridge structure which has its ridges running peripherally, i.e. perpendicular to the axis, e.g. in the form of corrugations, a mesh or a cell network and can be partially filled with a phase-transition material to maintain a maximum temperature at the exterior of the shell for a given hot temperature of the liquid within the cup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.