US4526807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for deposition of elemental metals and metalloids on substrates
Assignee: General Electric Co
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Filing: 1984-04-27
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Granted: 1985-07-02
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Expires: 2004-04-27
Abstract
Abstract Metals and metalloids may be deposited in the form of conducting lines, spots and the like by preparing a solution or dispersion of a reducible metal or metalloid compound in an oxidizable organic matrix such as a polyamic acid or polyimide, coating the substrate with said solution or dispersion, and contacting the coated substrate with a beam of localized radiation absorbable by said coated substrate, typically a laser beam.
Inventors
- 👤 Abraham Auerbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0154; H05K2203/00; H05K2203/10; H05K2203/107; H05K2203/12; H05K2203/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A method of depositing conductive elemental metal or metalloid lines or spots on a non-conductive substrate which comprises the steps of preparing a solution or dispersion of at least one reducible metal or metalloid compound in an oxidizable organic matrix comprising a polyamic acid or polyimide prepared by the reaction of at least one aromatic diamine with 2,2-bis propane dianhydride, coating said substrate with said solution or dispersion, and contacting said coated substrate with a beam of localized radiation absorbable by said coated substrate, thereby causing reduction of said metal or metalloid to the elemental state by said matrix.
Claim 2
Independent Claim
99 words
A method of depositing conductive elemental metal or metalloid lines or spots on a non-conductive substrate which comprises the steps of preparing a solution or dispersion of at least one reducible metal or metalloid compound in an oxidizable organic matrix comprising a polyamic acid or polyimide prepared by the reaction of at least one aromatic diamine with 2,2-bis propane dianhydride, coating said substrate with said solution or dispersion, and contacting said coated substrate with a beam of localized radiation absorbable by said coated substrate, thereby causing reduction of said metal or metalloid to the elemental state by said matrix.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the external radiation is coherent radiation.
Claim 4
Dependent Claim
32 words
A method according to claim 2 wherein the metal or metalloid is an element in Group Ib, VIa or VIII of the periodic table having an atomic weight within the range 60-200.
Claim 5
Dependent Claim
20 words
A method according to claim 3 wherein the metal or metalloid is copper, silver, gold, palladium, platinum, selenium or tellurium.
Claim 6
Dependent Claim
13 words
A method according to claim 4 wherein the external radiation is a laser.
Claim 7
Dependent Claim
13 words
A method according to claim 5 wherein the laser is a diode laser.
Claim 8
Independent Claim
102 words
A method of depositing elemental copper or silver lines on a resinous substrate which comprises the steps of preparing a solution of at least one reducible copper or silver compound in an oxidizable organic matrix comprising a polyamic acid or polyimide prepared by the reaction of at least one aromatic diamine with 2,2-bis propane dianhydride, coating said substrate with said solution, and containing said coated substrate with a laser beam produced by a diode laser, the energy imparted by said beam being absorbable by said coated substrate, thereby causing reduction of said copper or silver to the elemental state by said matrix.
Claim 9
Independent Claim
102 words
A method of depositing elemental copper or silver lines on a resinous substrate which comprises the steps of preparing a solution of at least one reducible copper or silver compound in an oxidizable organic matrix comprising a polyamic acid or polyimide prepared by the reaction of at least one aromatic diamine with 2,2-bis propane dianhydride, coating said substrate with said solution, and containing said coated substrate with a laser beam produced by a diode laser, the energy imparted by said beam being absorbable by said coated substrate, thereby causing reduction of said copper or silver to the elemental state by said matrix.
References Cited (Backward Citations)
US3073784A
Cited
US3073785A
Cited
US3234044A
Cited
US3451813A
Cited
US3808041A
Cited
US3994727A
Cited
US4042006A
Cited
US4221826A
Cited
US4229232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |