US5154886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of devices
Assignee: Nokia Bell Labs
•
Filing: 1990-07-27
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Granted: 1992-10-13
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Expires: 2010-07-27
Abstract
Abstract By using a specific polymer material for handling, shipping, and storage, integrated circuits are protected from both corrosion and electrostatic discharge. This enclosure material includes a polymer matrix with both carbon black and a metal embedded. Suitable metals include copper, iron, cobalt, and manganese.
Inventors
- 👤 John P. Franey
- 👤 Thomas E. Graedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:27
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H10; H10W; H10W42/00; H10W42/60; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/08; C23; C23F; C23F15/00; H01B1/22; Y; Y10; Y10S; Y10S428/00; Y10S428/922
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A process of protecting a device from electrostatic discharge, said process comprising the steps of positioning said device with respect to a protecting body, said body comprising a polymer film having embedded particles wherein said particles include particles comprising carbon black and particles comprising a metal material that binds to said carbon in an amount sufficient to protect a device from electrostatic discharge, whereby static discharge to or from said device is limited.
Claim 2
Dependent Claim
73 words
A process of protecting a device from electrostatic discharge, said process comprising the steps of positioning said device with respect to a protecting body, said body comprising a polymer film having embedded particles wherein said particles include particles comprising carbon black and particles comprising a metal material that binds to said carbon in an amount sufficient to protect a device from electrostatic discharge, whereby static discharge to or from said device is limited.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said metal binds to said polymer.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said device comprises an integrated circuit.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said metal also protects said device from corrosion.
Claim 6
Dependent Claim
18 words
The process of claim 4 wherein said metal is chosen from the group consisting of iron and copper.
Claim 7
Dependent Claim
20 words
The process of claim 1 wherein said metal is chosen from the group consisting of iron, cobalt, manganese and copper.
Claim 8
Dependent Claim
10 words
The process of claim 6 wherein such polymer comprises polyethylene.
Claim 9
Dependent Claim
21 words
The process of claim 1 wherein said protection means has a resistivity in the range 1×10 6 to 1×10 12 ohms/square.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |