Patent US5672407A successfully refreshed from Google Patents.
US5672407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure with etchable metal
Assignee: Beckett Technologies Corp
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Filing: 1996-03-15
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Granted: 1997-09-30
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Expires: 2016-03-15
Abstract
Abstract A self-supporting layer of flexible etchable metal having a thickness of about 1 micron has a plurality of apertures formed therethrough and has a layer of etchant resistant material on each face of the metal layer in a pattern completely overlying the metal layer and the periphery of the plurality of apertures.
Inventors
- 👤 D. Gregory Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:11
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; C; C23; C23F; C23F1/00; C23F1/02; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3463; B65D2581/3467; B65D2581/3471; B65D2581/3472; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/068; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S99/00; Y10S99/14; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24942; Y10T428/2495; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A novel element, comprising: a self-supporting flexible layer of aluminum having a thickness of about 1 to about 15 microns, having a first face and a second face and having a plurality of apertures formed therethrough with each said aperture being in registry in each said face, said plurality of apertures comprising a plurality of elongate slots in said self-supporting flexible layer of aluminum sized and arranged to generate thermal energy when the element is adjacent a foodstuff and exposed to microwave radiation, a layer of aqueous sodium hydroxide -resistant material adhered to each said face of said self-supporting flexible layer of aluminum in a pattern completely overlying said aluminum layer and defining the periphery of each of said plurality of apertures, and a layer of dielectric material adhered to and coextensive with each face of said element.
Claim 2
Dependent Claim
138 words
A novel element, comprising: a self-supporting flexible layer of aluminum having a thickness of about 1 to about 15 microns, having a first face and a second face and having a plurality of apertures formed therethrough with each said aperture being in registry in each said face, said plurality of apertures comprising a plurality of elongate slots in said self-supporting flexible layer of aluminum sized and arranged to generate thermal energy when the element is adjacent a foodstuff and exposed to microwave radiation, a layer of aqueous sodium hydroxide -resistant material adhered to each said face of said self-supporting flexible layer of aluminum in a pattern completely overlying said aluminum layer and defining the periphery of each of said plurality of apertures, and a layer of dielectric material adhered to and coextensive with each face of said element.
Claim 3
Dependent Claim
21 words
The element of claim 1 wherein said dielectric material is selected from the group consisting of polymeric film, paper and paperboard.
Claim 4
Dependent Claim
22 words
The element of claim 1 wherein said self-supporting flexible layer of aluminum has a thickness of about 3 to about 10 microns.
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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) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |