Patent US4790433A successfully refreshed from Google Patents.
US4790433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging combination
Assignee: Crowell Corp
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Filing: 1987-09-22
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Granted: 1988-12-13
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Expires: 2007-09-22
Abstract
Abstract Integrated circuit with leads extending essentially in one direction is packaged by pushing it against layer of crisp foam that can be electrically conductive, to cause the leads to penetrate into the foam. The integrated circuit is then covered with a plastic film that is adhered to the foam around the integrated circuit. Anti-stat coatings are applied on the various surfaces, and plastic film can be metallized.
Inventors
- 👤 Lewis R. Raszewsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
B; B32; B32B; B32B37/00; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/131; B29C66/40; B29C66/41; B29C66/43; B29C66/47; B29C66/472; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/727; B65; B65B; B65B9/00; B65B9/02; B29C66/72322; B29C66/72323; B29K; B29K2105/00; B29K2105/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/24998
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A packaging assembly for an integrated circuit having a number of connector leads projecting in essentially the same direction, the assembly having a layer of electrically conductive crisp plastic foam about 5 to about 8 millimeters thick, an anti-stat cohesive-nonadhesive coating on a first face of the foam layer, a polyethylene terephthalate film about 25 microns thick laminated to the opposite face of the foam, an anti-stat coating on said film, the integrated circuit being mounted on a central portion of said first foam face with said leads penetrating through that face into the foam, the integrated circuit being covered by a second polyethylene terephthalate film that has one of its faces coated with an anti-stat cohesive-nonadhesive layer and has that face adhered to the anti-stat cohesive-nonadhesive layer on the foam around the integrated circuit.
Claim 2
Dependent Claim
135 words
A packaging assembly for an integrated circuit having a number of connector leads projecting in essentially the same direction, the assembly having a layer of electrically conductive crisp plastic foam about 5 to about 8 millimeters thick, an anti-stat cohesive-nonadhesive coating on a first face of the foam layer, a polyethylene terephthalate film about 25 microns thick laminated to the opposite face of the foam, an anti-stat coating on said film, the integrated circuit being mounted on a central portion of said first foam face with said leads penetrating through that face into the foam, the integrated circuit being covered by a second polyethylene terephthalate film that has one of its faces coated with an anti-stat cohesive-nonadhesive layer and has that face adhered to the anti-stat cohesive-nonadhesive layer on the foam around the integrated circuit.
Claim 3
Dependent Claim
33 words
The combination of claim 1 in which the foam is loaded with particles of carbon, and the first polyethylene terephthalate film is metallized on its foam-engaging face to about a 40% light reflectivity.
Claim 4
Dependent Claim
21 words
The combination of claim 1 in which the second polyethylene terephthalate film is metallized to at least about 95% light reflectivity.
Claim 5
Dependent Claim
57 words
A packaging laminate of crisp electrically conductive plastic foam about 5 to about 8 millimeters thick laminated on one face to a film of metallized polyethylene terephthalate about 25 microns thick, the outer face of the foam being coated with an anti-stat cohesive-nonadhesive layer, and the outer face of the film being coated with an anti-stat layer.
Claim 6
Dependent Claim
57 words
A packaging laminate of crisp electrically conductive plastic foam about 5 to about 8 millimeters thick laminated on one face to a film of metallized polyethylene terephthalate about 25 microns thick, the outer face of the foam being coated with an anti-stat cohesive-nonadhesive layer, and the outer face of the film being coated with an anti-stat layer.
Claim 7
Dependent Claim
31 words
A packaging combination of (a) a roll of the laminate of claim 4, and (b) a roll of metallized polyethylene terephthalate film coated on one face with an anti-stat cohesive-nonadhesive layer.
Claim 8
Dependent Claim
11 words
The combination of claim 1 in which the foam is open-celled.
Claim 9
Dependent Claim
33 words
The combination of claim 4 in which the foam is open-celled and under its outer face coating the open-cell foam surface is first coated with a primer layer that essentially seals that face.
References Cited (Backward Citations)
US3653498A
Cited
US4321297A
Cited
US4584225A
Cited
WO1985004150A1
Cited
US4601157A
Cited
WO1987001092A1
Cited
US4693056A
Cited
US4698254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |