US4963424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave heating material
Assignee: CAMINE RESOURCES Inc
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Filing: 1989-05-19
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Granted: 1990-10-16
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Expires: 2009-05-19
Abstract
Abstract Novel laminate structures incorporating a thin metal layer which is of a thickness capable of converting incident microwave energy into thermal energy. The thin metal layer produces a greater heating effect than is produced by the same metal layer directly supported on a polymeric film layer. The laminate is useful in the microwave heating of a variety of food products.
Inventors
- 👤 Donald G. Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:37
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C23; C23C; C23C26/00; B32B15/12; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3463; B65D2581/3468; B65D2581/3471; B65D2581/3472; B65D2581/3486; B65D2581/3494; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/24934; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
A laminate structure, comprising: a non-conductive, heat-stable substrate layer, a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, and a lacquer layer completely overlying said metal layer and said substrate layer and having the same dimensions as said substrate layer and hence is coincident therewith.
Claim 2
Dependent Claim
61 words
A laminate structure, comprising: a non-conductive, heat-stable substrate layer, a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, and a lacquer layer completely overlying said metal layer and said substrate layer and having the same dimensions as said substrate layer and hence is coincident therewith.
Claim 3
Dependent Claim
11 words
The laminate of claim 1 wherein said metal layer is patterned.
Claim 4
Dependent Claim
20 words
The laminate of claim 2 wherein said metal is aluminum having an optical density of about 0.08 to about 0.8.
Claim 5
Dependent Claim
27 words
The laminate of claim 1 comprising an elongate strip of said substrate layer in the form of paper with longitudinally-spaced regions of said metal layer adhered thereto.
Claim 6
Dependent Claim
38 words
The laminate of claim 1 wherein said substrate layer is further laminated to a polymeric film layer bearing a further metal layer thereon of thickness effective to convert a portion of microwave energy incident thereon to thermal energy.
Claim 7
Dependent Claim
56 words
The laminate of claim 1 wherein said substrate layer has a further metal layer adhered thereto having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, and a further lacquer layer completely overlies said further metal layer and said substrate layer and has the same dimensions as said substrate layer.
Claim 8
Dependent Claim
75 words
A laminate structure, comprising: a non-conductive, heat-stable substrate layer, a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, a lacquer layer overlying at least a portion of said metal layer, and a layer of polymeric material completely overlying said metal layer and said lacquer layer and having the same dimensions as the substrate layer and hence is coincident therewith.
Claim 9
Dependent Claim
75 words
A laminate structure, comprising: a non-conductive, heat-stable substrate layer, a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, a lacquer layer overlying at least a portion of said metal layer, and a layer of polymeric material completely overlying said metal layer and said lacquer layer and having the same dimensions as the substrate layer and hence is coincident therewith.
Claim 10
Dependent Claim
22 words
The laminate of claim 7 wherein said lacquer layer is coincident with and completely overlies said metal layer and said substrate layer.
Claim 11
Dependent Claim
19 words
The laminate of claim 8 wherein a graphic is provided between said polymeric material layer and the lacquer layer.
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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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |