US4790968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing pressure-sensitive electroconductive sheet
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1986-10-07
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Granted: 1988-12-13
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Expires: 2006-10-07
Abstract
Abstract A process (I), for producing a pressure-sensitive electroconductive sheet by (A), forming conductive circuits or electrodes in a flexible porous substrate and (B), applying, followed by curing a pressure-sensitive conductive paste to either or both sides of the substrate to form a pressure-sensitive conductive layer; and a process (II) for producing a pressure-sensitive electroconductive sheet by (A), forming conductive circuits or electrodes in a flexible porous subhstrate, (B), subsequently applying, followed by curing, a pressure-sensitive conductive paste to either side of the substrate to form a pressure-sensitive conductive layer, and (C), applying, followed by curing, insulating silicone rubber to the side of the substrate on which the pressure-sensitive conductive layer is not formed to form an insulating silicone rubber layer.
Inventors
- 👤 Kazuhiro Ohkawa
- 👤 Tarou Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; H01C; H01C10/00; H01C10/10; H01C10/106; H01H13/702; H05; H05K; H05K3/00; H05K3/36; H05K3/361; H01H2201/00; H01H2201/022; H01H2201/032; H01H2201/034; H01H2201/036; H01H2209/00; H01H2209/002; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0116; H05K2201/02; H05K2201/0275; H05K2201/0281; H05K2201/029; H05K2203/00; H05K2203/02; H05K2203/0278; H05K3/30; H05K3/32; H05K3/321
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
62 words
A process for producing a pressure-sensitive electroconductive sheet which comprises (A) forming conductor circuits or electrodes in a flexible porous substrate and (B) subsequently applying, followed by curing, a pressure-sensitive conductive paste onto either or both sides of said substrate and onto those areas of said substrate in which said conductor circuits or electrodes have been, thereby forming a pressure-sensitive conductive layer.
Claim 2
Dependent Claim
62 words
A process for producing a pressure-sensitive electroconductive sheet which comprises (A) forming conductor circuits or electrodes in a flexible porous substrate and (B) subsequently applying, followed by curing, a pressure-sensitive conductive paste onto either or both sides of said substrate and onto those areas of said substrate in which said conductor circuits or electrodes have been, thereby forming a pressure-sensitive conductive layer.
Claim 3
Dependent Claim
25 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 1, wherein the flexible porous substrate is 15 to 300 μm thick.
Claim 4
Dependent Claim
23 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 1, wherein the flexible porous substrate is a nonwoven fabric.
Claim 5
Dependent Claim
29 words
A process for producing a pressure-sensitive electoconductive sheet as set forth in claim 1, wherein the conductor circuits or electrodes are formed by screen printing with a conductive paste.
Claim 6
Dependent Claim
27 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 1, wherein the application of the pressure-sensitive conductive paste is accomplished by screen printing.
Claim 7
Dependent Claim
33 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 1, wherein the pressure-sensitive conductive paste is one which is produced by dispersing surface-treated conductive metal powder into silicone rubber.
Claim 8
Dependent Claim
25 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 1, wherein the pressure-sensitive conductive layer is 10 to 200 micrometer thick.
Claim 9
Dependent Claim
90 words
A process for producing a pressure-sensitive electroconductive sheet which comprises (A) forming conductor circuits or electrodes in a flexible porous substrate, (B) subsequently applying, followed by curing, pressure-sensitive conductive paste onto either side of said substrate and onto those areas of said substrate in which said conductor circuits or electrodes have been formed, thereby forming a pressure-sensitive conductive layer, and (C) applying, followed by curing, insulating silicone rubber to that side of said substrate on which the pressure-sensitive conductive layer is not formed, thereby forming an insulating silicone rubber layer.
Claim 10
Dependent Claim
90 words
A process for producing a pressure-sensitive electroconductive sheet which comprises (A) forming conductor circuits or electrodes in a flexible porous substrate, (B) subsequently applying, followed by curing, pressure-sensitive conductive paste onto either side of said substrate and onto those areas of said substrate in which said conductor circuits or electrodes have been formed, thereby forming a pressure-sensitive conductive layer, and (C) applying, followed by curing, insulating silicone rubber to that side of said substrate on which the pressure-sensitive conductive layer is not formed, thereby forming an insulating silicone rubber layer.
Claim 11
Dependent Claim
25 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the flexible porous substrate is 15 to 300 micrometer thick.
Claim 12
Dependent Claim
23 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the flexible porous substrate is a nonwoven fabric.
Claim 13
Dependent Claim
29 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the conductor circuits or electrodes are formed by screen printing with a conductive paste.
Claim 14
Dependent Claim
27 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the application of the pressure-sensitive conductive paste is accomplished by screen printing.
Claim 15
Dependent Claim
33 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the pressure-sensitive conductive paste is one which is produced by dispersing surface-treated conductive metal powder into silicone rubber.
Claim 16
Dependent Claim
25 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the pressure-sensitive conductive layer is 10 to 200 micrometer thick.
Claim 17
Dependent Claim
27 words
A process for producing a pressure-sensitive electroconductive sheet as set forth in claim 8, wherein the application of the insulating silicone rubber is accomplished by screen printing.
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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) | 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 |