US Patent No: 6,120,817
Number of patents in Portfolio can not be more than 2000
Container for storing fine particles
Stats
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Sep 19, 2000
Issued date -
Aug 7, 1998
filing date -
09/135,319
serial no -
In Force
status
Importance
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Abstract
The present invention is a container for storing fine particles in a sealed packaging, wherein air in the container can be evacuated through compression or vacuum without removing the fine particles. The container comprises a main body enclosing a pouch, terminating in a principal opening, a sealing mechanism attached to the pouch for sealing the pouch, at least one exit port extending through the wall of the pouch, and a porosity mechanism adjacent the exit port, wherein the porosity mechanism permits air to exit through the exit port, but prevents the fine particles from escaping through the exit port.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,281,027 Multiple ply bag with detachable inner seal pouch for packaging products | 29 | 1993 | |
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| 4,310,118 Packaging bags for powdery materials | 55 | 1980 | |
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| 5,171,950 Flexible pouch and paper bag combination for use in the microwave popping of popcorn | 29 | 1989 | |
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| 5,120,585 Package for preservative agent | 30 | 1990 | |
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| 5,314,702 Vented dough can | 12 | 1992 | |
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| 4,834,554 Plastic bag with integral venting structure | 40 | 1987 | |
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| 5,388,910 Bag with a filtering check valve | 35 | 1992 | |
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| 5,059,036 Vented pouch arrangement and method | 149 | 1990 | |
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| 5,804,265 Functional freezer storage bag | 36 | 1996 | |
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| 4,743,123 Plastic bag and closed plastic bag with laser-formed venting perforations | 29 | 1986 | |
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| 5,590,777 Sterilizable flexible pouch package | 16 | 1994 | |