Special receptacle or package – Including ancillary article contacting medium – Gas medium
Reexamination Certificate
2000-03-06
2001-04-10
Foster, Jim (Department: 3728)
Special receptacle or package
Including ancillary article contacting medium
Gas medium
C053S432000, C426S124000, C426S129000
Reexamination Certificate
active
06213294
ABSTRACT:
TECHNICAL FIELD
A packaging system for preserving perishable items which comprises a tray made from open-cell foam, an oxygen absorber, a barrier bag enclosing said tray, and a pressure valve connected to said barrier bag.
BACKGROUND OF THE INVENTION
In U.S. Pat. No. 5,698,250 of Gary R. DelDuca et al., which is assigned to Tenneco Packaging Inc., a “modified atmospheric package” was claimed. This package contained “ . . . an oxygen scavenger activated with an activating agent . . . . ” According to the patentees, the oxygen scavenger is necessary because “Low-level oxygen systems relying upon evacuation techniques to diminish oxygen levels suffer from several disadvantages . . . the evacuation techniques render it difficult to remove any oxygen within a previously wrapped package such as an overwrapped meat tray . . . . The trapped oxygen raises the residual oxygen level in the package and can also cause billowing and subsequent damage to the package during evacuation” (see lines 3-15 of column 2 of this patent). The entire disclosure of this patent is hereby incorporated by reference into this specification. Furthermore, each of the prior art references cited during the prosecution of this patent are also hereby incorporated by reference into this specification.
It is an object of this invention to provide an improved packaging system for preserving perishable items.
SUMMARY OF THE INVENTION
In accordance with this invention, there is provided a packaging system for preserving a perishable item comprised of a tray comprised of open-cell foam, an oxygen absorber, a bag enclosing said tray, and a pressure relief valve operatively connected to such bag.
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Foster Jim
Greenwald Howard J.
Greenwald & Basch LLP
Tres Fresh LLC
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