Patent US3814921A successfully refreshed from Google Patents.
US4258086A
Expired / Lapsed
US
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Method of reproduction metallized patterns with microwave energy
Assignee: General Mills Inc
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Filing: 1979-12-26
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Granted: 1981-03-24
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Expires: 1999-12-26
Abstract
Abstract A foil laminated board having a pattern formed in the metallic foil is placed in close contact with a metallized substrate such as a metallized plastic film. The two metal surfaces are subjected to a microwave energy field which duplicates or copies the foil pattern on the metallized substrate or film.
Inventors
- 👤 Nelson J. Beall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; B32B27/10; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3439; B65D2581/344; B65D2581/3463; B65D2581/3466; B65D2581/3471; B65D2581/3472; B65D2581/3486; B65D2581/3494
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
A method of reproducing a pattern formed on the metallized surface of a first dielectric substrate on the metallized surface of a second dielectric substrate comprising the steps of placing said metallized surfaces in a proximal relation, and subjecting said surfaces to microwave energy for a time sufficient to remove metal from the metallized surface of said second substrate in accordance with the pattern formed on the metallized surface of said first substrate.
Claim 2
Independent Claim
73 words
A method of reproducing a pattern formed on the metallized surface of a first dielectric substrate on the metallized surface of a second dielectric substrate comprising the steps of placing said metallized surfaces in a proximal relation, and subjecting said surfaces to microwave energy for a time sufficient to remove metal from the metallized surface of said second substrate in accordance with the pattern formed on the metallized surface of said first substrate.
Claim 3
Dependent Claim
22 words
The method of claim 1 in which the metallized surface of said first substrate is thicker than that of said second substrate.
Claim 4
Dependent Claim
32 words
The method of claim 2 in which the metallized surface of said first substrate constitutes a metal foil with portions thereof removed to expose underlying dielectric surface portions of said first substrate.
Claim 5
Dependent Claim
19 words
The method of claim 3 in which the metallized surface of said second substrate constitutes a thin metallic coating.
Claim 6
Dependent Claim
25 words
The method of claim 4 in which said first substrate constitutes a sheet of paperboard and said second substrate constitutes a sheet of plastic film.
Claim 7
Dependent Claim
24 words
The method of claim 5 including a second plastic film, said metallic coating being between the first plastic film and said second plastic film.
Claim 8
Dependent Claim
18 words
The method of claim 1 in which said pattern is composed of metallic regions separated by nonmetallic regions.
Claim 9
Dependent Claim
21 words
The method of claim 7 in which said metallic regions constitute rectangular islands and said nonmetallic regions constitute dielectric strips therebetween.
Claim 10
Dependent Claim
30 words
The method of claim 8 in which said islands are from about 1/32 to 3/4 inch on a side and said gaps are from 0.0001 to 0.0625 inch in width.
Claim 11
Dependent Claim
19 words
The method of claim 9 in which said islands are from about 1/16 to 1/4 inch on a side.
Claim 12
Dependent Claim
47 words
The method of claim 9 in which said islands are formed from a metal foil having a thickness on the order of 0.00035 inch and the metallized surface of said second substrate constitutes a metallic coating having a thickness on the order of 1.0 micron or less.
Claim 13
Dependent Claim
25 words
The method of claim 11 in which said first substrate constitutes a sheet of paperboard and said second substrate constitutes a layer of polyester plastic.
Claim 14
Dependent Claim
19 words
The method of claim 12 including a layer of polyethylene plastic, said metallic coating being sandwiched between said layers.
Claim 15
Dependent Claim
22 words
The method of claim 12 in which said paperboard is approximately 0.020 inch thick and said film is approximately 0.005 inch thick.
Claim 16
Independent Claim
97 words
A method of removing metal from selected areas of a thin metallic coating formed on a first dielectric substrate, the method comprising the steps of placing a metallic foil laminated to a second dielectric substrate in close contact with said thin metallic coating, said foil having a number of metallic islands and dielectric gaps therebetween to form a pattern, and subjecting said substrates and their metallized surfaces to microwave energy for a predetermined period of time sufficient to remove some of said metallic coating in the regions confronted by said dielectric gaps and thus duplicate said pattern.
Claim 17
Independent Claim
97 words
A method of removing metal from selected areas of a thin metallic coating formed on a first dielectric substrate, the method comprising the steps of placing a metallic foil laminated to a second dielectric substrate in close contact with said thin metallic coating, said foil having a number of metallic islands and dielectric gaps therebetween to form a pattern, and subjecting said substrates and their metallized surfaces to microwave energy for a predetermined period of time sufficient to remove some of said metallic coating in the regions confronted by said dielectric gaps and thus duplicate said pattern.
Claim 18
Dependent Claim
27 words
The method of claim 15 in which said metallic coating has a thickness of approximately 0.1 micron and said foil has a thickness of approximately 0.00035 inch.
References Cited (Backward Citations)
US3243784A
Cited
US4149322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |