Container and method for dispensing semi-solid substances
US4883198A · kind A · utility
18Cited by
14References
8Claims
0Family size
Inventor
Key dates
| Filing date | Oct 6, 1987 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Oct 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2231/027
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container for semi-solid substances includes a releasable seal adapted to be opened by a user. Opening of the seal releases vacuum pressure inside the container to allow the semi-solid substance to be dispensed from the open end of the container as a unitary mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.