US4960598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package assembly including a multi-surface, microwave interactive tray
Assignee: Graphic Packaging International LLC
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Filing: 1988-10-05
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Granted: 1990-10-02
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Expires: 2008-10-05
Abstract
Abstract A food package assembly of the type designed to serve the dual function of providing a package for shipment and storage of a prepared food and of microwave heating of the food in a manner producing a browning or crisping effect that is particularly adapted to the needs of foods, such as French bread pizzas and garlic bread, which cannot be crisped in a microwave oven via the use of a single planar microwave interactive crisping layer and which, due to the grease and/or vapor driven out of them cannot be heated in a microwave oven in a closely confined manner without becoming soggy. In accordance with preferred embodiments, a food product is received upon an inner tray member that coacts with an outer package body to cradle the food product so that the adjoining surface thereof will be crisped by a microwave interactive heating layer applied to the facing surface of the inner tray member. Additionally, venting is provided through openings at opposed ends of the outer package body and via venting channels formed between side wall portions of the inner tray member and adjoining inner wall portions of the outer package body, communication between the top side of the inner tray member and the venting channels being provided via venting holes and/or end edge recessing or notching in accordance with various embodiments.
Inventors
- 👤 Anthony J. Swiontek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:09
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/38; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D2205/00; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3405; B65D2581/3406; B65D2581/3437; B65D2581/3486; B65D2581/3489; B65D2581/3494
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
246 words
Package assembly for the storing and microwave heating of a food item comprising: (a) an outer package body defining an internal food receiving space; (b) a food item within said food receiving space; and (c) tray member disposed in the food receiving space of the outer package body and being formed of a microwave transparent material upon which a layer of a microwave interactive material, that is capable of converting microwave energy to heat, is disposed on one side thereof; wherein said tray member has a flat bottom wall for supporting said tray member, in use, upon a flat surface within a microwave oven for heating of the food item, and has upwardly directed sidewalls which, together with said flat bottom wall are sized and shaped relative to the food item so as to cradle the food item with multiple surfaces of the food item in sufficient proximity with respect to the microwave interactive layer for producing browning or crisping of said multiple surfaces during heating of the food item within the tray member in a microwave oven; and wherein a plurality of vent holes are formed in portions of said sidewalls in a vicinity of said bottom wall at each of opposite sides of the food item as a means for venting of gases and vapor released by the food item within said inner tray member during heating of the food item, away from said food item out of the tray member through said sidewalls.
Claim 2
Dependent Claim
246 words
Package assembly for the storing and microwave heating of a food item comprising: (a) an outer package body defining an internal food receiving space; (b) a food item within said food receiving space; and (c) tray member disposed in the food receiving space of the outer package body and being formed of a microwave transparent material upon which a layer of a microwave interactive material, that is capable of converting microwave energy to heat, is disposed on one side thereof; wherein said tray member has a flat bottom wall for supporting said tray member, in use, upon a flat surface within a microwave oven for heating of the food item, and has upwardly directed sidewalls which, together with said flat bottom wall are sized and shaped relative to the food item so as to cradle the food item with multiple surfaces of the food item in sufficient proximity with respect to the microwave interactive layer for producing browning or crisping of said multiple surfaces during heating of the food item within the tray member in a microwave oven; and wherein a plurality of vent holes are formed in portions of said sidewalls in a vicinity of said bottom wall at each of opposite sides of the food item as a means for venting of gases and vapor released by the food item within said inner tray member during heating of the food item, away from said food item out of the tray member through said sidewalls.
Claim 3
Dependent Claim
50 words
Package assembly according to claim 1, wherein said tray member is formed of a paperboard blank that has a bottom panel portion and a plurality of side panel portions defined by fold lines extending the length thereof, said blank being folded about said fold lines into a U-like cross-sectional shape.
Claim 4
Dependent Claim
30 words
Package assembly according to claim 2, further comprising means for supporting said bottom panel portion in an elevated condition for heating of the food item above a static air space.
Claim 5
Dependent Claim
24 words
Package assembly according to claim 2, wherein said means for supporting comprises leg means formed as an integral part of said inner tray member.
Claim 6
Dependent Claim
16 words
Package assembly according to claim 3, wherein said means for supporting comprises a corrugated paperboard spacer.
Claim 7
Dependent Claim
24 words
Package assembly according to claim 1 further comprising means for supporting said flat bottom wall in an elevated condition above a static air space.
Claim 8
Dependent Claim
24 words
Package assembly according to claim 6, wherein said means for supporting comprises leg means formed as an integral part of said inner tray member.
Claim 9
Dependent Claim
19 words
Package assembly according to claim 6, wherein a tab portion extends upwardly at an end of said bottom wall.
Claim 10
Dependent Claim
15 words
Package assembly according to claim 1, wherein the outer package body is a paperboard carton.
Claim 11
Dependent Claim
55 words
Package assembly according to claim 1, wherein said food item is a bread product having a crust thickness of the type found on french bread pizza and garlic bread and said tray member is capable of serving as a means for producing a crisping of said crust in manner that is free of soggy spots.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |