US4908246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metalized microwave interactive laminate and process for mechanically deactivating a selected area of microwave interactive laminate
Assignee: Fort James Corp
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Filing: 1988-01-26
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Granted: 1990-03-13
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Expires: 2008-01-26
Abstract
Abstract A present invention provides a microwave interactive laminate and a process for brush deactivation of such a laminate. A film, coated with a microwave interactive layer is provided. A desired portion of the microwave interactive layer is coated with a mask layer and the entire assembly is then exposed to abrasion means. The coated and un-coated areas are subjected to the application of mechanical forces to form discontinuities in the microwave interactive layer. That portion of the microwave interactive layer that was coated remains interactive with microwave radiation and is a heating area while the un-coated area is deactivated.
Inventors
- 👤 Richard E. Fredricks
- 👤 Michael A. Schmelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:37
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/16; B32B27/00; B32B27/16; B32B27/14; B32B29/00; B32B29/04; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B32B38/00; B32B38/0012; B32B2038/0016; B32B2317/00; B32B2317/12; B32B2439/00; B32B2439/70; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3439; B65D2581/344; B65D2581/3463; B65D2581/3466; B65D2581/3467; B65D2581/3471; B65D2581/3472; B65D2581/3477; B65D2581/3478; B65D2581/3479; B65D2581/3486; B65D2581/3494; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
A container for storing, supporting and microwave cooking food, comprising: (a) a package having a surface or surfaces for enclosing and/or supporting a food product; and (b) a microwave interactive laminate forming said surface or surfaces to heat said food product in response to microwave energy including: (i) a microwave interactive film having a film layer and a microwave interactive layer disposed on one side of said film layer, said microwave interactive layer having a heating area and a deactivated area, said deactivated area having discontinuities produced by abrasion, whereby the capability of said deactivated area to generate heat in response to microwave energy has been reduced; and (ii) a substrate layer bonded to said microwave interactive film to form a microwave interactive laminate, wherein said microwave interactive layer is disposed between said film layer and said substrate layer.
Claim 2
Dependent Claim
139 words
A container for storing, supporting and microwave cooking food, comprising: (a) a package having a surface or surfaces for enclosing and/or supporting a food product; and (b) a microwave interactive laminate forming said surface or surfaces to heat said food product in response to microwave energy including: (i) a microwave interactive film having a film layer and a microwave interactive layer disposed on one side of said film layer, said microwave interactive layer having a heating area and a deactivated area, said deactivated area having discontinuities produced by abrasion, whereby the capability of said deactivated area to generate heat in response to microwave energy has been reduced; and (ii) a substrate layer bonded to said microwave interactive film to form a microwave interactive laminate, wherein said microwave interactive layer is disposed between said film layer and said substrate layer.
Claim 3
Dependent Claim
19 words
A container as defined in claim 1 wherein said microwave interactive laminate forms interior vertical surfaces of said container.
Claim 4
Dependent Claim
24 words
A container as defined in claim 1 wherein said microwave interactive laminate forms a surface of said package which will support said food product.
Claim 5
Dependent Claim
25 words
A container as defined in claim 1 wherein said microwave interactive laminate forms a surface of said package which will be above said food product.
Claim 6
Dependent Claim
37 words
A container as defined in claim 1 wherein said deactivated areas of said microwave interactive layer correspond to areas of said package wherein said deactivated areas of said microwave interactive layers overlap when said package is assembled.
Claim 7
Dependent Claim
18 words
A container as defined in claim 1 wherein said heating area of said microwave interactive layer is circular.
Claim 8
Dependent Claim
20 words
A container as defined in claim 1 wherein said heating area includes a grid of heating areas and deactivated areas.
Claim 9
Dependent Claim
140 words
A container for storing, supporting and microwave cooking food, comprising: (a) a package having a surface or surfaces for enclosing and/or supporting a food product; and (b) a microwave interactive laminate bonded to said surface or surfaces to heat said food product in response to microwave energy including: (i) a microwave interactive film having a film layer and a microwave interactive layer disposed on one side of said film layer, said microwave interactive layer having a heating area and a deactivated area, said deactivated area having discontinuities produced by abrasion, whereby the capability of said deactivated area to generate heat in response to microwave energy has been reduced; and (ii) a substrate layer bonded to said microwave interactive film to form a microwave interactive laminate, wherein said microwave interactive layer is disposed between said film layer and said substrate layer.
Claim 10
Dependent Claim
140 words
A container for storing, supporting and microwave cooking food, comprising: (a) a package having a surface or surfaces for enclosing and/or supporting a food product; and (b) a microwave interactive laminate bonded to said surface or surfaces to heat said food product in response to microwave energy including: (i) a microwave interactive film having a film layer and a microwave interactive layer disposed on one side of said film layer, said microwave interactive layer having a heating area and a deactivated area, said deactivated area having discontinuities produced by abrasion, whereby the capability of said deactivated area to generate heat in response to microwave energy has been reduced; and (ii) a substrate layer bonded to said microwave interactive film to form a microwave interactive laminate, wherein said microwave interactive layer is disposed between said film layer and said substrate layer.
References Cited (Backward Citations)
US1431917A
Cited
US4267420A
Cited
US4230924A
Cited
US4232059A
Cited
US4398994A
Cited
US4552614A
Cited
US4735513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |