US3239375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating high gain cryotrons
Assignee: International Business Machines Corp
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Filing: 1962-06-28
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Granted: 1966-03-08
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ames Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:24
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/02; G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H; H10; H10N; H10N60/00; H10N60/30; H10N60/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF FABRICATING IN AN EVACUATED CHAMBER A CRYOTRON HAVING A HIGH STATIC GAIN UPON A RIGID SUBSTRATE COMPRISING THE STEPS OF, HIGHLY EVACUATING SAID CHAMBER IN ORDER TO REMOVE MOST OF THE IMPURITIES THEREFROM, INTRODUCING A REACTIVE GAS INTO SAID CHAMBER TO ESTABLISH AND MAINTAIN THE PRESSURE OF SAID REACTIVE GAS AT APPROXIMATELY 10**-6 TORR, VAPOR DEPOSITING A SECOND SUPERCONDUCTIVE MATERIAL FORM A GATING ELEMENT UPON SAID SUBSTRATE IN THE PRESENCE OF SAID REACTIVE GAS, SAID REACTIVE GAS BEING EFFECTIVE TO INCREASE WETTING OF SAID SUBSTRATE BY SAID FIRST SUPERCONDUCTIVE MATERIAL, PASSIVATING THE EDGES OF SAID GATING ELEMENT, AND VAPOR DEPOSITING A SECOND SUPERCONDUCTIVE MATERIAL TO FORM A CONTROL ELEMENT OVER SAID GATING ELEMENT.
Claim 2
Independent Claim
116 words
THE METHOD OF FABRICATING IN AN EVACUATED CHAMBER A CRYOTRON HAVING A HIGH STATIC GAIN UPON A RIGID SUBSTRATE COMPRISING THE STEPS OF, HIGHLY EVACUATING SAID CHAMBER IN ORDER TO REMOVE MOST OF THE IMPURITIES THEREFROM, INTRODUCING A REACTIVE GAS INTO SAID CHAMBER TO ESTABLISH AND MAINTAIN THE PRESSURE OF SAID REACTIVE GAS AT APPROXIMATELY 10**-6 TORR, VAPOR DEPOSITING A SECOND SUPERCONDUCTIVE MATERIAL FORM A GATING ELEMENT UPON SAID SUBSTRATE IN THE PRESENCE OF SAID REACTIVE GAS, SAID REACTIVE GAS BEING EFFECTIVE TO INCREASE WETTING OF SAID SUBSTRATE BY SAID FIRST SUPERCONDUCTIVE MATERIAL, PASSIVATING THE EDGES OF SAID GATING ELEMENT, AND VAPOR DEPOSITING A SECOND SUPERCONDUCTIVE MATERIAL TO FORM A CONTROL ELEMENT OVER SAID GATING ELEMENT.
References Cited (Backward Citations)
US2904452A
Cited
US3085913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |