US5756021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic devices comprising dielectric foamed polymers
Assignee: International Business Machines Corp
•
Filing: 1996-03-29
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Granted: 1998-05-26
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Expires: 2016-03-29
Abstract
Abstract The present invention relates to an electronic device for distributing electrical signals between electronic elements comprising a dielectric foamed thermoset polymer having a plurality of electrical circuits.
Inventors
- 👤 James Lupton Hedrick
- 👤 Da-Yuan Shih
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:38
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/22; H01R13/24; H01R13/2407; H01R13/2414; C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; G; G01; G01R; G01R1/00; G01R1/02; G01R1/06; G01R1/067; G01R1/073; G01R1/07307; G01R3/00; H01R12/00; H01R12/50; H01R12/51; H01R12/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A process for making an electrical device having a first and second surface and comprising a foamed crosslinked, closed cell polymer and a plurality of electrically conducting wires extending through the polymer from the first to the second surfaces of the electrical device, the process comprising the steps of: (a) disposing a solution of crosslinkable precursor in a solvent around a plurality of electrically conducting wires; (b) polymerizing the precursor to form a crosslinked polymer wherein the polymer is crosslinked polycyanurate; (c) gelling the crosslinked polymer with phase separation of the polymer from the solvent; and (d) removing the solvent from the gelled polymer to form the electrical device.
Claim 2
Dependent Claim
109 words
A process for making an electrical device having a first and second surface and comprising a foamed crosslinked, closed cell polymer and a plurality of electrically conducting wires extending through the polymer from the first to the second surfaces of the electrical device, the process comprising the steps of: (a) disposing a solution of crosslinkable precursor in a solvent around a plurality of electrically conducting wires; (b) polymerizing the precursor to form a crosslinked polymer wherein the polymer is crosslinked polycyanurate; (c) gelling the crosslinked polymer with phase separation of the polymer from the solvent; and (d) removing the solvent from the gelled polymer to form the electrical device.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the wires have a diameter less than 0.005 inches.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein the solvent is hexane, cyclohexane, or carbon dioxide.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein the solvent is removed by heating the polymer.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the solvent is removed by washing the polymer with a nonsolvent.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the solvent is removed by exposure of the polymer to the atmosphere.
Claim 8
Dependent Claim
20 words
The process of claim 2 wherein the foamed polymer has a pore size of about 0.1 to about 10 microns.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |