US4892782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous microwave susceptor packaging material
Assignee: EIDP Inc
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Filing: 1987-04-13
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Granted: 1990-01-09
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Expires: 2007-04-13
Abstract
Abstract New composite materials useful for wrapping food items to be cooked by microwave energy comprise drapable, liquid permeable, woven or non-woven, fibrous dielectric substrates, which substrates, or fibers of which substrates, are coated and/or imbibed with one or more susceptor materials. The composite materials, when wrapped around a food item to be cooked by microwave energy, enhance the browning and/or crispening of the items.
Inventors
- 👤 John R. Fisher
- 👤 Hua-Feng Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3463; B65D2581/3464; B65D2581/3471; B65D2581/3472; B65D2581/3477; B65D2581/3478; B65D2581/3479; B65D2581/3486; B65D2581/3494; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2139; Y10T442/259; Y10T442/2607; Y10T442/2762; Y10T442/277; Y10T442/2861; Y10T442/2893; Y10T442/291; Y10T442/2918; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A composite material for wrapping around a food item to be cooked in a microwave oven comprising a drapable, liquid permeable, woven or non-woven, fibrous, dielectric substrate, which substrate, or fibers of which substrate, are coated and/or imbibed with one or more microwave susceptor materials, the amount of said susceptor materials being sufficient to generate adequate heat to rapidly brown or crispen the surface of food item adjacent thereto without substantially impeding the ability of the microwave energy to penetrate the susceptor material and cook the food item, said composite material being liquid permeable.
Claim 2
Dependent Claim
94 words
A composite material for wrapping around a food item to be cooked in a microwave oven comprising a drapable, liquid permeable, woven or non-woven, fibrous, dielectric substrate, which substrate, or fibers of which substrate, are coated and/or imbibed with one or more microwave susceptor materials, the amount of said susceptor materials being sufficient to generate adequate heat to rapidly brown or crispen the surface of food item adjacent thereto without substantially impeding the ability of the microwave energy to penetrate the susceptor material and cook the food item, said composite material being liquid permeable.
Claim 3
Dependent Claim
43 words
Composite material according to claim 1 capable of absorbing or transmitting a substantial portion of the moisture evolved at the surface of the wrapped food item during cooking of said item, thereby enhancing the browning and crispening of the surface of said item.
Claim 4
Dependent Claim
21 words
Composite material according to claim 2 where said susceptor materials are selected from aluminum, stainless steel, nickel/iron/molybdenum alloys and nickel/iron/copper alloys.
Claim 5
Dependent Claim
21 words
Composite material according to claim 2 where said susceptor materials are selected from mono- and poly-saccharides and ionically conductive flavor agents.
Claim 6
Dependent Claim
13 words
Composite material according to claim 2 where said susceptor material is aluminum flake.
Claim 7
Dependent Claim
21 words
Composite material according to claim 2 where said composite material is coated or imbibed with an aroma or flavor enhancing agent.
Claim 8
Dependent Claim
28 words
Composite material according to claim 1 which exhibit a moisture takeup of at least 0.5 mg/sq. cm and a moisture transmission rate of at least 50 mg/sq. cm/minute.
Claim 9
Dependent Claim
28 words
Composite material according to claim 1 which exhibit a moisture takeup of at least 1.0 mg/sq. cm and a moisture transmission rate of at least 200 mg/sq. cm/minute.
Claim 10
Dependent Claim
28 words
Composite material according to claim 1 where said substrate is made from fibers selected from cotton, cellulose, jute, hemp, acetate, fiberglass, nylon, polyester, aramid, polypropylene and other polyolefins.
Claim 11
Dependent Claim
18 words
Composite material according to claim 1 where said substrate is paper or a woven cotton or fiberglass fabric.
Claim 12
Dependent Claim
14 words
Composite material according to claim 1 where stainless steel, nickel/iron/molybdenum alloys and nickel/iron/copper alloys.
Claim 13
Dependent Claim
21 words
Composite material according to claim 1 where said susceptor materials are selected from mono- and poly-saccharides and ionically conductive flavor agents.
Claim 14
Dependent Claim
13 words
Composite material according to claim 1 where said susceptor material is aluminum flake.
Claim 15
Dependent Claim
21 words
Composite material according to claim 1 where said composite material is coated or imbibed with an aroma or flavor enhancing agent.
Claim 16
Dependent Claim
14 words
The composite materials of claim 1 wrapped around the food item of claim 1.
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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) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |