US5175404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave receptive heating sheets and packages containing them
Assignee: McCain Foods Ltd
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Filing: 1991-12-16
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Granted: 1992-12-29
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Expires: 2011-12-16
Abstract
Abstract A food heating package for elongated products such as french fries and fish sticks which includes partitions formed from microwave energy absorbing material adapted to crisp, toast or brown the surfaces of the foods sticks. The partitions preferably enclose the food sticks on at least three sides and can be made by forming folds in a sheet of vapor-deposited semiconductive metallic coating applied to a plastic film, e.g. polyester, backing.
Inventors
- 👤 David W. Andreas
- 👤 David H. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:12
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3412; B65D2581/3413; B65D2581/3437; B65D2581/3463; B65D2581/3466; B65D2581/3471; B65D2581/3472; B65D2581/3486; B65D2581/3494
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
180 words
A package for heating food sticks comprising: a microwave transparent package enclosure; at least one food heating susceptor formed from microwave receptive sheet material within said package; said susceptor including a plurality of parallel folds therein extending within the susceptor sheet to divide the package into a plurality of side-by-side locations each sized to hold at least one of said food sticks that is to be heated by conduction from the microwave receptive sheet material; each of the side-by-side locations holding a food stick such that the folded microwave receptive sheet material is in face to face relationship with a surface of each food stick; the food sticks in the locations being oriented with respect to one another in a predetermined manner such that the longitudinal axis of each stick is parallel to those of the other sticks and also coincides with the axis of each location in the susceptor sheet to facilitate the transfer of heat from the susceptor sheet to each stick so as to brown, crisp or toast the surface thereof during heating in a microwave oven.
Claim 2
Dependent Claim
180 words
A package for heating food sticks comprising: a microwave transparent package enclosure; at least one food heating susceptor formed from microwave receptive sheet material within said package; said susceptor including a plurality of parallel folds therein extending within the susceptor sheet to divide the package into a plurality of side-by-side locations each sized to hold at least one of said food sticks that is to be heated by conduction from the microwave receptive sheet material; each of the side-by-side locations holding a food stick such that the folded microwave receptive sheet material is in face to face relationship with a surface of each food stick; the food sticks in the locations being oriented with respect to one another in a predetermined manner such that the longitudinal axis of each stick is parallel to those of the other sticks and also coincides with the axis of each location in the susceptor sheet to facilitate the transfer of heat from the susceptor sheet to each stick so as to brown, crisp or toast the surface thereof during heating in a microwave oven.
Claim 3
Dependent Claim
50 words
The package of claim 1 wherein an end portion of the package at one end of said susceptor sheet is removable whereupon the food sticks are able to slide out of the locations holding the sticks in the susceptor sheet and out of the package for removal from the package.
Claim 4
Dependent Claim
15 words
The package of claim 1 wherein the package enclosure is paper of a paperboard carton.
Claim 5
Dependent Claim
30 words
The package of claim 3 wherein the carton has an upper portion that normally covers the food sticks and said upper portion can be lifted to expose the food sticks.
Claim 6
Dependent Claim
205 words
A package for heating food sticks comprising: a microwave transparent package enclosure; said enclosure including first and second broad opposing faces, relatively narrow connecting walls extending between the broad opposing faces; at least one microwave receptive susceptor sheet within the package and extending therein generally parallel to the broad opposing faces; said microwave receptive susceptor sheet including a plurality of parallel side-by-side folds to provide food holding locations between the parallel folds to receive the food sticks; each of the locations between the folds being sized to hold at least one of the food sticks that is to be heated by conduction from the microwave receptive sheet material; each of the locations holding a food stick such that the microwave receptive sheet material is in face-to-face relationship with a surface of the food stick; the food sticks being oriented with respect to one another in a predetermined manner such that the longitudinal axis of each food stick is parallel to those of the other food sticks and also coincides with the axis of each location of the sheet holding the food stick to facilitate the transfer of heat from the susceptor to each food stick so as to brown, crisp or toast the surface thereof.
Claim 7
Dependent Claim
205 words
A package for heating food sticks comprising: a microwave transparent package enclosure; said enclosure including first and second broad opposing faces, relatively narrow connecting walls extending between the broad opposing faces; at least one microwave receptive susceptor sheet within the package and extending therein generally parallel to the broad opposing faces; said microwave receptive susceptor sheet including a plurality of parallel side-by-side folds to provide food holding locations between the parallel folds to receive the food sticks; each of the locations between the folds being sized to hold at least one of the food sticks that is to be heated by conduction from the microwave receptive sheet material; each of the locations holding a food stick such that the microwave receptive sheet material is in face-to-face relationship with a surface of the food stick; the food sticks being oriented with respect to one another in a predetermined manner such that the longitudinal axis of each food stick is parallel to those of the other food sticks and also coincides with the axis of each location of the sheet holding the food stick to facilitate the transfer of heat from the susceptor to each food stick so as to brown, crisp or toast the surface thereof.
Claim 8
Dependent Claim
32 words
The package of claim 5 wherein the enclosure can be open at one end to expose the food sticks for allowing their removal from the package enclosure through the open end thereof.
Claim 9
Dependent Claim
50 words
The package of claim 6 wherein an end portion of said package enclosure is connected to another portion of the package by means of a severable member that can be torn or otherwise disconnected to allow the end portion to be separated from the other portion of the package enclosure.
Claim 10
Dependent Claim
17 words
The package of claim 5 wherein the food stick comprises a potato piece or a bread stick.
Claim 11
Dependent Claim
29 words
The package of claim 5 wherein the susceptor sheet comprises paper or plastic film having a layer of a microwave interactive material applied to at least one surface thereof.
Claim 12
Dependent Claim
23 words
The package of claim 9 wherein the microwave interactive material comprises a semiconductive metallic coating that is deposited by metallization of the sheet.
Claim 13
Dependent Claim
11 words
The package of claim 5 wherein the sheet comprises greaseproof paper.
Claim 14
Dependent Claim
38 words
The package of claim 5 wherein said susceptor includes a plurality of layers and said layers are positioned one above the other within the package for holding the food sticks in layers between the layers of the susceptor.
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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) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |