Patent US4925830A successfully refreshed from Google Patents.
US4925830A
Expired / Lapsed
US
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Laser based method for forming a superconducting oxide layer on various substrates
Assignee: Tracer Technologies Inc
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Filing: 1988-04-14
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Granted: 1990-05-15
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Expires: 2008-04-14
Abstract
Abstract A laser based method for forming a superconducting oxide layer on various substrates is disclosed. The method comprises applying a dry salt precursor to the surface of a substrate and the heating the substrate by a laser beam which causes a superconducting oxide layer to be formed on the substrate without post annealing. An alternative embodiment comprises application of a salt solution precursor on the substrate surface. After the solution evaporates, the substrate is heated through laser energy and a superconducting oxide layer is formed on the substrate.
Inventors
- 👤 Fraser Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:50
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0548
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
100 words
A method for forming a superconducting ceramic layer on a substrate comprising: applying a solution of salts to the substrate wherein the salt mixture contains yttrium, barium, and copper in a 1:2:3 atomic ratio; evaporating the solution to leave a layer of salts on the substrate; heating the substrate by passing the substrate through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected with the substrate.
Claim 2
Independent Claim
100 words
A method for forming a superconducting ceramic layer on a substrate comprising: applying a solution of salts to the substrate wherein the salt mixture contains yttrium, barium, and copper in a 1:2:3 atomic ratio; evaporating the solution to leave a layer of salts on the substrate; heating the substrate by passing the substrate through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected with the substrate.
Claim 3
Dependent Claim
11 words
The method according to claim 1, wherein the salts are oxides.
Claim 4
Dependent Claim
11 words
The method according to claim 1, wherein the salts are carbonates.
Claim 5
Dependent Claim
11 words
The method according to claim 1, wherein the salts are nitrates.
Claim 6
Dependent Claim
11 words
The method according to claim 1 wherein the substrate is copper.
Claim 7
Dependent Claim
11 words
The method according to claim 1 wherein the substrate is zinc.
Claim 8
Dependent Claim
16 words
The method according to claim 1 wherein the laser beam is produced by a Nd:YAG laser.
Claim 9
Independent Claim
92 words
A method for forming a superconducting ceramic layer on a substrate comprising: applying a layer of dry salts to the surface of the substrate wherein the dry salts contain yttrium, barium and copper in a 1:2:3 atomic ratio; heating the substrate by passing the surface through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected to the substrate.
Claim 10
Independent Claim
92 words
A method for forming a superconducting ceramic layer on a substrate comprising: applying a layer of dry salts to the surface of the substrate wherein the dry salts contain yttrium, barium and copper in a 1:2:3 atomic ratio; heating the substrate by passing the surface through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected to the substrate.
Claim 11
Dependent Claim
11 words
The method according to claim 8, wherein the salts are oxides.
Claim 12
Dependent Claim
11 words
The method according to claim 8, wherein the salts are carbonates.
Claim 13
Dependent Claim
11 words
The method according to claim 8, wherein the salts are nitrates.
Claim 14
Dependent Claim
11 words
The method according to claim 8 wherein the substrate is copper.
Claim 15
Dependent Claim
11 words
The method according to claim 8 wherein the substrate is zinc.
Claim 16
Dependent Claim
16 words
The method according to claim 8 wherein the laser beam is produced by a Nd:YAG laser.
Claim 17
Independent Claim
97 words
A method for forming a superconducting layer on a substrate comprising: applying a solution of salts to the substrate wherein the salt mixture contains bismuth, calcium, strontium and copper in a 1:1:1:2 atomic ratio; evaporating the solution to leave a layer of salts on the substrate; heating the substrate by passing the substrate through the path of a laser beam; producing reactive species from the salts at the surface through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected with the substrate.
Claim 18
Independent Claim
97 words
A method for forming a superconducting layer on a substrate comprising: applying a solution of salts to the substrate wherein the salt mixture contains bismuth, calcium, strontium and copper in a 1:1:1:2 atomic ratio; evaporating the solution to leave a layer of salts on the substrate; heating the substrate by passing the substrate through the path of a laser beam; producing reactive species from the salts at the surface through the energy of the laser beam which causes the reactive species to react with the surface substrate to form a ceramic layer intimately connected with the substrate.
Claim 19
Dependent Claim
11 words
The method according to claim 15, wherein the salts are oxides.
Claim 20
Dependent Claim
11 words
The method according to claim 15, wherein the salts are carbonates.
Claim 21
Dependent Claim
11 words
The method according to claim 15, wherein the salts are nitrates.
Claim 22
Dependent Claim
11 words
The method according to claim 15, wherein the substrate is copper.
Claim 23
Dependent Claim
11 words
The method according to claim 15, wherein the substrate is zinc.
Claim 24
Dependent Claim
16 words
The method according to claim 15, wherein the laser beam is produced by a Nd:YAG laser.
Claim 25
Independent Claim
83 words
The method for forming a superconducting ceramic layer on a substrate comprising: applying a layer of dry salts to the surface of the substrate wherein the dry salts contain bismuth, calcium, strontium and copper in a 1:1:1:2 atomic ratio; heating the substrate by passing the surface through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate.
Claim 26
Independent Claim
83 words
The method for forming a superconducting ceramic layer on a substrate comprising: applying a layer of dry salts to the surface of the substrate wherein the dry salts contain bismuth, calcium, strontium and copper in a 1:1:1:2 atomic ratio; heating the substrate by passing the surface through the path of a laser beam; producing reactive species from the salts at the surface of the substrate through the energy of the laser beam which causes the reactive species to react with the surface substrate.
Claim 27
Dependent Claim
12 words
The method according to claim 22, wherein the salts are oxides. PG,27
Claim 28
Dependent Claim
11 words
The method according to claim 22, wherein the salts are carbonates.
Claim 29
Dependent Claim
11 words
The method according to claim 22, wherein the salts are nitrates.
Claim 30
Dependent Claim
11 words
The method according to claim 22, wherein the substrate is copper.
Claim 31
Dependent Claim
11 words
The method according to claim 22, wherein the substrate is zinc.
Claim 32
Dependent Claim
16 words
The method according to claim 22, wherein the laser beam is produced by a Nd:YAG laser.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |