US3288637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge passivation
Assignee: International Business Machines Corp
•
Filing: 1962-06-28
•
Granted: 1966-11-29
•
Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ames Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/58; C23C14/5806; C23C14/04; C23C14/042; C23C14/044; C23C14/5873; C23F; C23F1/00; C23F1/02; G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; H; H01; H01B; H01B1/00; H10; H10N; H10N60/00; H10N60/01; H10N60/30; H10N60/35; Y; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/818; Y10S505/82; Y10S505/825; Y10S505/831; Y10S505/833; Y10S505/882; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24479; Y10T428/24488
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF FABRICATING A CRYOTRON DEVICE COMPRISING A SUPERCONDUCTIVE GATING ELEMENT HAVING SHARP TRANSITION CHARACTERISTICS COMPRISING THE STEPS OF VAPOR DEPOSITING A THIN LAYER OF GOLD HAVING A UNIFORM THICKNESS, AND VAPOR DEPOSITING A GATING ELEMENT OF INDIUM THROUGH A MASK UPON SAID THIN LAYER THE EDGE PORTIONS OF SAID GATING ELEMENT CONTACTING SAID THIN LAYER AND BEING TAPERED, A GREATER PERCENTAGE OF GOLD BEING PROVIDED ADJACENT SAID EDGE PORTIONS OF SAID GATING ELEMENT THAN ADJACENT THE CENTER PORTION OF SAID GATING ELEMENT WHEREBY THE CRITICAL TEMPERATURE OF SAID EDGE PORTIONS OF SAID GATING ELEMENT IS MADE LOWER THAN THE CRITICAL TEMPERATURE OF SAID CENTER PORTION OF SAID GATING ELEMENT, PROVIDING A CONTROL ELEMENT INSULATED FROM SAID GATING ELEMENT AND REGISTERED WITH SAID CONTACTING EDGE PORTIONS TO APPLY MAGNETIC FIELDS TO SAID GATING ELEMENT.
Claim 2
Independent Claim
135 words
THE METHOD OF FABRICATING A CRYOTRON DEVICE COMPRISING A SUPERCONDUCTIVE GATING ELEMENT HAVING SHARP TRANSITION CHARACTERISTICS COMPRISING THE STEPS OF VAPOR DEPOSITING A THIN LAYER OF GOLD HAVING A UNIFORM THICKNESS, AND VAPOR DEPOSITING A GATING ELEMENT OF INDIUM THROUGH A MASK UPON SAID THIN LAYER THE EDGE PORTIONS OF SAID GATING ELEMENT CONTACTING SAID THIN LAYER AND BEING TAPERED, A GREATER PERCENTAGE OF GOLD BEING PROVIDED ADJACENT SAID EDGE PORTIONS OF SAID GATING ELEMENT THAN ADJACENT THE CENTER PORTION OF SAID GATING ELEMENT WHEREBY THE CRITICAL TEMPERATURE OF SAID EDGE PORTIONS OF SAID GATING ELEMENT IS MADE LOWER THAN THE CRITICAL TEMPERATURE OF SAID CENTER PORTION OF SAID GATING ELEMENT, PROVIDING A CONTROL ELEMENT INSULATED FROM SAID GATING ELEMENT AND REGISTERED WITH SAID CONTACTING EDGE PORTIONS TO APPLY MAGNETIC FIELDS TO SAID GATING ELEMENT.
References Cited (Backward Citations)
US3041209A
Cited
US2948261A
Cited
US3001893A
Cited
US3059196A
Cited
US3090023A
Cited
US3023727A
Cited
US2989716A
Cited
US3125688A
Cited
US3174124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |