Patent US4407872A successfully refreshed from Google Patents.
US4407872A
Expired / Lapsed
US
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Sheet material and envelope for packaging electronic parts
Assignee: Reiko Co Ltd
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Filing: 1981-12-02
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Granted: 1983-10-04
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Expires: 2001-12-02
Abstract
Abstract The sheet material for packaging electronic parts consists of a laminated material which comprises a transparent plastic film layer and a thin metal film layer having a light transmittance of at least 25% and an electric resistance of less than 108 ohms/cm2. The sheet material is heat-sealable at the surface of said metal film layer. An envelope for packaging electronic parts is made of the sheet material by heat-sealing in a state of disposing the plastic film layer outside.
Inventors
- 👤 Shigeo Horii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:54
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/26; B32; B32B; B32B15/00; B32B15/04; B32B15/08; H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0079; B32B2323/00; B32B2323/04; B32B2323/10; B32B2325/00; B32B2327/00; B32B2327/06; B32B2367/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/922; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1338; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/24901; Y10T428/24917; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
66 words
An envelope for packaging electronic parts, which is made of a laminated material comprising a transparent plastic film layer and a thin metal film layer having a light transmittance of at least 25% and electric resistance of less than 10 8 ohms/cm 2 , the laminated material being heat-sealed to form said envelope with the metal film layer provided on an inner surface of the envelope.
Claim 2
Dependent Claim
66 words
An envelope for packaging electronic parts, which is made of a laminated material comprising a transparent plastic film layer and a thin metal film layer having a light transmittance of at least 25% and electric resistance of less than 10 8 ohms/cm 2 , the laminated material being heat-sealed to form said envelope with the metal film layer provided on an inner surface of the envelope.
Claim 3
Dependent Claim
30 words
An envelope defined in claim 1, wherein said plastic film layer is heat-sealable and said metal film layer has a thickness within the range of 20 A to 250 A.
Claim 4
Dependent Claim
37 words
An envelope defined in claim 1, wherein a heat-sealable transparent resin film layer is formed between said plastic film layer and said metal film layer having a thickness within the range of 20 A to 250 A.
Claim 5
Dependent Claim
38 words
An envelope defined in claim 1, wherein a heat-sealable resin film layer is formed partially between said plastic film layer and said metal film layer which has a thickness within the range of 20 A to 250 A.
Claim 6
Dependent Claim
18 words
An envelope defined in claim 4, wherein said heat-sealable resin film layer is one of coloured and opaque.
Claim 7
Dependent Claim
27 words
An envelope defined in claim 1, wherein a heat-sealable resin film layer is formed partially on said metal film layer laminated on said transparent plastic film layer.
Claim 8
Dependent Claim
18 words
An envelope defined in claim 6, wherein said heat-sealable resin film layer is one of coloured and opaque.
Claim 9
Dependent Claim
81 words
A sheet material for packaging electronic parts, consisting essentially of a laminated material which comprises a transparent plastic film layer and a thin metal film layer having a light transmittance of at least 25% and an electric resistance of less than 10 8 ohms/cm 2 said laminated material being heat-sealable at the surface of said metal film layer so that, by heat-sealing said laminated material to form an envelope, said metal film layer is at the inner surface of said envelope.
Claim 10
Dependent Claim
81 words
A sheet material for packaging electronic parts, consisting essentially of a laminated material which comprises a transparent plastic film layer and a thin metal film layer having a light transmittance of at least 25% and an electric resistance of less than 10 8 ohms/cm 2 said laminated material being heat-sealable at the surface of said metal film layer so that, by heat-sealing said laminated material to form an envelope, said metal film layer is at the inner surface of said envelope.
Claim 11
Dependent Claim
39 words
A sheet material defined in claim 8, wherein said metal film layer has a thickness with the range of 20 A to 250 A and is pervious to a heat-sealable plastic material of said plastic film layer when heated.
Claim 12
Dependent Claim
44 words
A sheet material defined in claim 8, wherein a heat-sealable transparent resin film layer is formed between said plastic film layer and said metal film layer, and the thickness of said metal film layer is within the range of 20 A to 250 A.
Claim 13
Dependent Claim
44 words
A sheet material defined in claim 8, wherein a heat-sealable resin film layer is formed partially between said plastic film layer and said metal film layer and the thickness of said metal film layer is within the range of 20 A to 250 A.
Claim 14
Dependent Claim
19 words
A sheet material defined in claim 11, wherein said heat-sealable resin film layer is one of coloured and opaque.
Claim 15
Dependent Claim
28 words
A sheet material defined in claim 8, wherein a heat-sealable resin film layer is formed partially on said metal film layer laminated on said transparent plastic film layer.
Claim 16
Dependent Claim
19 words
A sheet material defined in claim 13, wherein said heat-sealable resin film layer is one of coloured and opaque.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |