Patent US4663826A successfully refreshed from Google Patents.
US4663826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for generating a conductive region on a surface of a body of dielectric material
Assignee: Individual
•
Filing: 1985-09-23
•
Granted: 1987-05-12
•
Expires: 2005-09-23
Abstract
Abstract A method for generating an area of increased conductivity on the surface of a body of dielectric material, such as for the purpose of attaching electrodes or other electrical interconnections to the area includes the steps of enclosing the surface within a reducing atmosphere and irradiating the portion of the surface corresponding to the desired conductive area with laser radiation for a selected period of time. The atmosphere may be a hydrogen atmosphere at a pressure in the range of 0-1000 HPa. Additionally, the surface may be preheated prior to irradiation.
Inventors
- 👤 Dieter Baeuerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:28
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/12; B23K26/123; B23K26/127; B23K26/14; B23K26/1462; B23K26/36; B23K26/40; H; H01; H01G; H01G13/00; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H10; H10N; H10N30/00; H10N30/01; H10N30/06; H10W; H10W70/00; H10W70/01; H10W70/05; B23K2103/00; B23K2103/50; B23K2103/52; H05K2203/00; H05K2203/10; H05K2203/107; H05K2203/11; H05K2203/1136; Y; Y10; Y10S; Y10S148/00; Y10S148/093; Y10S148/14
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
67 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; enclosing said surface in a reducing atmosphere; and irradiating a portion of said surface corresponding to the conductive region to be generated with laser radiation for a selected period of time.
Claim 2
Independent Claim
67 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; enclosing said surface in a reducing atmosphere; and irradiating a portion of said surface corresponding to the conductive region to be generated with laser radiation for a selected period of time.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1 wherein said reducing atmosphere is maintained above room temperature.
Claim 4
Dependent Claim
24 words
A method as claimed in claim 1 wherein said reducing atmosphere is a hydrogen atmosphere at a pressure in a range of 0-1000 HPa.
Claim 5
Dependent Claim
25 words
A method as claimed in claim 1 wherein said reducing atmosphere partially consists of hydrogen at a partial pressure in the range of 0-1000 HPa.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 1 comprising the additional step of pre-heating said body before irradiation with said laser.
Claim 7
Dependent Claim
61 words
A method as claimed in claim 1 wherein the step of irradiating with a laser is further defined by the step of irradiating a portion of said surface corresponding to the conductive region to be generated with laser radiation for a selected period of time from a laser selected from the group consisting of an argon laser and a krypton laser.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 1 wherein the step of irradiating said surface is further defined by irradiating said surface with a CO 2 laser.
Claim 9
Independent Claim
18 words
A method as claimed in clam 3 wherein said hydrogen atmosphere is at a pressure of 100 HPa.
Claim 10
Dependent Claim
28 words
A method as claimed in claim 5 wherein the step of pre-heating is further defined by pre-heating said body at a temperature in the range of 200°-300° C.
Claim 11
Dependent Claim
21 words
A method as claimed in claim 6 further comprising the additional step of pre-heating said body before irradiation with said laser.
Claim 12
Independent Claim
73 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; heating said surface; enclosing said surface in a reducing atmosphere at a selected pressure; and irradiating said surface at a selected area corresponding to the desired conductive region with a laser for a selected period of time.
Claim 13
Independent Claim
73 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; heating said surface; enclosing said surface in a reducing atmosphere at a selected pressure; and irradiating said surface at a selected area corresponding to the desired conductive region with a laser for a selected period of time.
Claim 14
Dependent Claim
55 words
A method as claimed in claim 11 wherein the step of irradiating said surface with a laser is further defined by irradiating said surface at a selected area corresponding to the desired conductive region with a laser for a selected period of time selected from the group of an argon laser and a krypton laser.
Claim 15
Dependent Claim
29 words
A method as claimed in claim 11 wherein the step of irradiating said surface with a laser is further defined by irradiating said surface with a CO 2 laser.
Claim 16
Dependent Claim
15 words
A method as claimed in claim 11 wherein said reducing atmosphere is a hydrogen atmosphere.
Claim 17
Dependent Claim
30 words
A method as claimed in claim 11 wherein the step of heating said surface is further defined by heating said surface at a temperature in a range of 200°-300° C.
Claim 18
Independent Claim
80 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; enclosing said surface in a reducing atmosphere at least partially consisting of hydrogen at a selected pressure; heating said surface in a range of 200°-300°; and irradiating said surface with a laser at at least one location thereon corresponding to said electrically conductive region.
Claim 19
Independent Claim
80 words
A method for generating a conductive region on a surface of a body of dielectric oxide material comprising the steps of: selecting said material from the group consisting of single-crystal perovskite oxide and ceramic perovskite oxide; enclosing said surface in a reducing atmosphere at least partially consisting of hydrogen at a selected pressure; heating said surface in a range of 200°-300°; and irradiating said surface with a laser at at least one location thereon corresponding to said electrically conductive region.
Claim 20
Dependent Claim
26 words
A method as claimed in claim 16 wherein said reducing atmosphere consists at least partially of hydrogen at a pressure in the range of 0-1000 HPa.
References Cited (Backward Citations)
US3601576A
Cited
US4258078A
Cited
EP0021087A1
Cited
US4261764A
Cited
US4443493A
Cited
US4542037A
Cited
US4348263A
Cited
US4457950A
Cited
US4496607A
Cited
US4572843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |