US4896009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas permeable microwave reactive package
Assignee: Graphic Packaging International LLC
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Filing: 1988-07-11
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Granted: 1990-01-23
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Expires: 2008-07-11
Abstract
Abstract A disposable microwave browning and crisping package having a flat substrate and a microwave reactive layer affixed over one surface of said substrate, the microwave interactive layer, when subjected to microwave energy, converting microwave energy to heat in an amount sufficient to brown and crisp food in heat transfer relationship has at least one aperture to allow gases and vapors generated from cooking foods such as large pie crusts to traverse said laminate thereby allowing the food product to remain in close proximity to the reactive heater resulting in improved browning and crisping.
Inventors
- 👤 Thomas D. Pawlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:17
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D2205/00; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3405; B65D2581/3406; B65D2581/3437; B65D2581/3486; B65D2581/3494; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
In a microwave browning and crisping arrangement of the type including a substrate having a substantially planar support surface on which is laminated a browning and crisping layer forming a microwave interactive means for converting microwave energy to heat in an amount sufficient to brown and crisp food; and a food item having a bottom surface resting in contact with the browning and crisping layer on said planar support surface; the improvement, as a means for producing improved browning and crisping of said bottom surface of the food item by maintaining said contact between the bottom surface of the food item and the browning and crisping layer, comprising at least one aperture being provided through said substrate, said at least one aperture being confined to a central area of said support surface and the remaining surface area of the support surface being free of apertures, said remaining surface area being greater than said central surface area.
Claim 2
Dependent Claim
156 words
In a microwave browning and crisping arrangement of the type including a substrate having a substantially planar support surface on which is laminated a browning and crisping layer forming a microwave interactive means for converting microwave energy to heat in an amount sufficient to brown and crisp food; and a food item having a bottom surface resting in contact with the browning and crisping layer on said planar support surface; the improvement, as a means for producing improved browning and crisping of said bottom surface of the food item by maintaining said contact between the bottom surface of the food item and the browning and crisping layer, comprising at least one aperture being provided through said substrate, said at least one aperture being confined to a central area of said support surface and the remaining surface area of the support surface being free of apertures, said remaining surface area being greater than said central surface area.
Claim 3
Dependent Claim
21 words
A microwave browning and crisping arrangement according to claim 1 wherein said bottom surface is at least approximately 7" in diameter.
Claim 4
Dependent Claim
23 words
A microwave browning and crisping arrangement according to claim 2, wherein said at least one aperture is a hole of approximately 3/8" diameter.
Claim 5
Dependent Claim
23 words
A microwave browning and crisping arrangement according to claim 1, wherein said at least one aperture is a hole of approximately 3/8" diameter.
Claim 6
Dependent Claim
26 words
A microwave browning and crisping arrangement according to claim 1, wherein said at least one aperture comprises a single centrally positioned hole of approximately 3/8" diameter.
Claim 7
Dependent Claim
42 words
A microwave browning and crisping arrangement according to claim 1, wherein said at least one aperture comprises a centrally positioned aperture and a plurality of additional apertures disposed in a pattern therearound and wherein said apertures are holes of approximately 3/8" diameter.
Claim 8
Dependent Claim
32 words
A microwave browning and crisping arrangement according to claim 1 wherein said at least one aperture comprises a centrally positioned aperture and a plurality of additional apertures disposed in a pattern therearound.
Claim 9
Dependent Claim
22 words
A microwave browning and crisping arrangement according to claim 1, wherein said at least one aperture comprises a single centrally positioned aperture.
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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) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |