Coffee filter ring
US4735719A · kind A · utility
34Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1987 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Feb 12, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/06
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A continuous generally frusto-conically shaped ring for use in retaining the side walls of conventional automatic drip type coffee filters in erect orientation within filter support trays and which include an annular flange which is engageable with the top or sides of the filter in such a manner so as to not interfere with the normal passage of hot water through the coffee filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.