Patent US4584456A successfully refreshed from Google Patents.
US4584456A
Expired / Lapsed
US
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Production of resistor from insulating material by local heating
Assignee: Toshiba Corp
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Filing: 1983-09-07
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Granted: 1986-04-22
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Expires: 2003-09-07
Abstract
Abstract A resistor is formed by locally heating an insulating material layer between conductors to convert the heated material into a first resistor element. A second resistor element is formed to contact the first resistor element while measuring the resistance between the conductors, until a desired resistor composed of the first and second resistor elements and having a predetermined resistance value is obtained.
Inventors
- 👤 Hirosi Oodaira
- 👤 Haruko Suzuki
- 👤 Masayuki Saito
- 👤 Nobuo Iwase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:48
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; H01C17/22
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
232 words
A method for producing a resistor having a predetermined resistance, comprising: (a) providing a substrate, at least a surface layer portion of which is made of an insulating material which can be converted into a resistor material upon being heated, first and second conductor layers bewng formed which are in contact with said surface layer portion of said substrate so as to have a distance therebetween; (b) locally heating said surface layer portion of said substrate between said first and second conductors to convert the insulating material at said heated portion into said resistor material, thereby forming at least one first resistor element comprising said resistor material, said at least one first resistor element having two ends contacted with said first and second conductor layers; and (c) while measuring a resistance between said first and second conductor layers, locally heating said surface layer portion of said substrate between said first and second conductor layers to convert the insulating material at said heated portion into said resistor material, thereby forming at least one second resistor element comprising said resistor material and contacting said at least one first resistor element, until a second-stage resistor comprising said at least one first resistor element and at least one second resistor element and having said predetermined resistance is produced and wherein said second linear resistor element crosses said first linear resistor element at at least one point.
Claim 2
Independent Claim
232 words
A method for producing a resistor having a predetermined resistance, comprising: (a) providing a substrate, at least a surface layer portion of which is made of an insulating material which can be converted into a resistor material upon being heated, first and second conductor layers bewng formed which are in contact with said surface layer portion of said substrate so as to have a distance therebetween; (b) locally heating said surface layer portion of said substrate between said first and second conductors to convert the insulating material at said heated portion into said resistor material, thereby forming at least one first resistor element comprising said resistor material, said at least one first resistor element having two ends contacted with said first and second conductor layers; and (c) while measuring a resistance between said first and second conductor layers, locally heating said surface layer portion of said substrate between said first and second conductor layers to convert the insulating material at said heated portion into said resistor material, thereby forming at least one second resistor element comprising said resistor material and contacting said at least one first resistor element, until a second-stage resistor comprising said at least one first resistor element and at least one second resistor element and having said predetermined resistance is produced and wherein said second linear resistor element crosses said first linear resistor element at at least one point.
Claim 3
Independent Claim
229 words
A method for producing a resistor having a predetermined resistance, comprising: (a) providing a substrate, at least a surface layer portion of which is made of an insulating material which can be converted into a resistor material upon being heated, first and second conductor layers being formed to be in contact with said surface layer portion of said substrate so as to have a distance therebetween; (b) locally heating said surface layer portion of said substrate between said first and second conductor layers to convert the insulating material at said heated portion into said resistor material, thereby forming at least one first resistor element comprising said resistor material, said at least one first resistor element having two ends contacted with said first and second conductor layers; and (c) while measuring a resistance between said first and second conductor layers, locally heating said surface layer portion of said substrate between said first and second conductor layers along said first resistor element to convert the insulating material at said heated portion into said resistor material, thereby forming at least one second resistor element comprising said resistor material and contacting said at least one first resistor element in a longitudinal direction of said first resistor element, until a second-stage resistor comprising said at least one first resistor element and at least one second resistor element and having said predetermined resistance is produced.
Claim 4
Independent Claim
229 words
A method for producing a resistor having a predetermined resistance, comprising: (a) providing a substrate, at least a surface layer portion of which is made of an insulating material which can be converted into a resistor material upon being heated, first and second conductor layers being formed to be in contact with said surface layer portion of said substrate so as to have a distance therebetween; (b) locally heating said surface layer portion of said substrate between said first and second conductor layers to convert the insulating material at said heated portion into said resistor material, thereby forming at least one first resistor element comprising said resistor material, said at least one first resistor element having two ends contacted with said first and second conductor layers; and (c) while measuring a resistance between said first and second conductor layers, locally heating said surface layer portion of said substrate between said first and second conductor layers along said first resistor element to convert the insulating material at said heated portion into said resistor material, thereby forming at least one second resistor element comprising said resistor material and contacting said at least one first resistor element in a longitudinal direction of said first resistor element, until a second-stage resistor comprising said at least one first resistor element and at least one second resistor element and having said predetermined resistance is produced.
Claim 5
Independent Claim
17 words
A method according to claims 1 or 2, wherein the insulating material comprises an organic polymeric material.
Claim 6
Dependent Claim
22 words
A method according to claim 3, wherein the polymeric material contains acrylonitrile in an amount of not less than 5% by weight.
Claim 7
Dependent Claim
17 words
A method according to claim 4, wherein the organic polymeric material comprises at least one acrylonitrile-based polymer.
Claim 8
Dependent Claim
26 words
A method according to claim 4, wherein the organic polymer material comprises a combination of at least one acrylonitrile-based polymer and at least one non-acrylonitrile-based polymer.
Claim 9
Dependent Claim
14 words
A method according to claim 6, wherein the non-acrylonitrile-based polymer comprises a thermosetting polymer.
Claim 10
Dependent Claim
22 words
A method according to claim 4, wherein the organic polymeric material contains acrylonitrile in an amount of 30 to 50% by weight.
Claim 11
Dependent Claim
17 words
A method according to claim 3, wherein the insulating material contains a powder of a metal oxide.
Claim 12
Independent Claim
19 words
A method according to claims 1 or 2, wherein local heating is preformed by irradiation with a laser beam.
Claim 13
Independent Claim
25 words
A method according to claims 1 or 2, wherein said first linear resistor element is formed after said first and second conductor layers are formed.
Claim 14
Independent Claim
25 words
A method according to claims 1 or 2, wherein said first linear resistor element is formed before said first and second conductor layers are formed.
Claim 15
Independent Claim
80 words
A method for producing a resistor comprising: layer providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing a combination of not less than 5% by weight of acrylonitrile and at least one non-acrylonitrile polymer; and selectively heating said surface layer portion so as to carbonize said organic polyermic material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 16
Independent Claim
80 words
A method for producing a resistor comprising: layer providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing a combination of not less than 5% by weight of acrylonitrile and at least one non-acrylonitrile polymer; and selectively heating said surface layer portion so as to carbonize said organic polyermic material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 17
Dependent Claim
14 words
A method according to claim 13, wherein the non-acrylonitrile-based polymer comprises a thermosetting polymer.
Claim 18
Independent Claim
76 words
A method for producing a resistor comprising: providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing not less than 5% by weight of acrylonitrile and a powder of metal oxide; and selectively heating said surface layer portion so as to carbonize said organic polymeric material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 19
Independent Claim
76 words
A method for producing a resistor comprising: providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing not less than 5% by weight of acrylonitrile and a powder of metal oxide; and selectively heating said surface layer portion so as to carbonize said organic polymeric material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 20
Independent Claim
72 words
A method for producing a resistor comprising: providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing an amount of 30% to 50% by weight of acrylonitrile; and selectively heating said surface layer portion so as to carbonize said organic polymeric material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 21
Independent Claim
72 words
A method for producing a resistor comprising: providing a substrate, at least a surface layer portion of which is made of an insulating material comprising an organic polymeric material containing an amount of 30% to 50% by weight of acrylonitrile; and selectively heating said surface layer portion so as to carbonize said organic polymeric material at the heated portion, and converting said organic polymeric material at said portion into a resistor material.
Claim 22
Dependent Claim
21 words
A method according to claim 13, 15, or 16 , wherein local heating is performed by irradiation with a laser beam.
Claim 23
Dependent Claim
67 words
A method according to claim 13, 15, 16, wherein said resistor comprises at least one first linear resistor element, two ends of which are connected to first and second conductor layers formed in contact with said surface layer portion and spaced apart from each other, and at least one second linear resistor element which is formed in contact with said at least one first linear resistor element.
Claim 24
Dependent Claim
45 words
A method according to claim 18, wherein after sa first linear resistor element is formed between said first and second conductor layers, said second resistor element is formed while measuring a resistance between said first and second conductor layers, until a predetermined resistance is obtained.
Claim 25
Dependent Claim
23 words
A method according to claim 19, wherein said second linear resistor element crosses said first linear resistor element at at least one point.
Claim 26
Dependent Claim
24 words
A method according to claim 19, wherein said second linear resistor element is in contact with said first linear element in a longitudinal direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |