US3593413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing power-current cryotrons
Assignee: Siemens AG
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Filing: 1969-07-22
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Granted: 1971-07-20
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Expires: 1989-07-22
Abstract
Abstract Described is a method of manufacturing a power-current cryotron having a layered gate-conductor structure which in the normal conducting state at the cryotron operating temperature has a free electron path length smaller than in the superconductor material of the cryotron. The method comprises steps of situating a pulverulent insulating material between a plurality of layers of superconductor material, and then compressing the layers together with the pulverulent insulating material therebetween to reduce the cross-sectional area of the cryotron. The superconductor material is selected from the group consisting of lead and niobium and the pulverulent insulating material is selected from magnesium oxide and aluminum oxide.
Inventors
- 👤 Wilhelm Kafka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:47
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/30; H10N60/35; H10N60/355; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/823; Y10S505/825; Y10S505/856; Y10S505/857; Y10S505/86; Y10S505/882; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12701; Y10T428/12771; Y10T428/12806; Y10T428/12819
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
In a method of manufacturing a power-current cryotron having a layered gate-conductor structure which in the normal conducting state at the cryotron operating temperature has a free electron path length smaller than in the superconductor material of the cryotron, the steps of situating a layer of pulverulent insulating material between a plurality of layers of superconductor material, and then compressing the layers together with the pulverulent insulating material therebetween to reduce the cross-sectional area of the cryotron.
Claim 2
Dependent Claim
77 words
In a method of manufacturing a power-current cryotron having a layered gate-conductor structure which in the normal conducting state at the cryotron operating temperature has a free electron path length smaller than in the superconductor material of the cryotron, the steps of situating a layer of pulverulent insulating material between a plurality of layers of superconductor material, and then compressing the layers together with the pulverulent insulating material therebetween to reduce the cross-sectional area of the cryotron.
Claim 3
Dependent Claim
15 words
In a method as recited in claim 1, compressing the layers together in a press.
Claim 4
Dependent Claim
17 words
In a method as recited in claim 1, compressing the layers together by passing them between rollers.
Claim 5
Dependent Claim
13 words
In a method as recited in claim 1, said superconductor material being lead.
Claim 6
Dependent Claim
13 words
In a method as recited in claim 1, said superconductor material being niobium.
Claim 7
Dependent Claim
15 words
In a method as recited in claim 1, said pulverulent insulating material being magnesium oxide.
Claim 8
Dependent Claim
15 words
In a method as recited in claim 1, said pulverulent insulating material being aluminum oxide.
Claim 9
Dependent Claim
77 words
In a method as recited in claim 1 and wherein said gate-conductor structure is in the form of a tape having locations where electrical connections are made thereto, the step of providing the tape at the latter locations with a cross section which is enlarged with respect to other portions of the tape and with an electrical resistance at said locations when in a normal conducting state which is smaller than at other locations of the tape.
Claim 10
Dependent Claim
38 words
In a method as recited in claim 1, said superconductor material being selected from the group consisting of lead or niobium and said pulverulent insulating material being selected from the group consisting of magnesium oxide and aluminum oxide.
References Cited (Backward Citations)
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US3116422A
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US3191055A
Cited
US3144704A
Cited
US3218693A
Cited
US3327370A
Cited
US3258828A
Cited
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |