US2859140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of introducing impurities into a semi-conductor
Assignee: GTE Sylvania Inc
•
Filing: 1951-07-16
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Granted: 1958-11-04
•
Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Edward N Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
H; H10; H10P; H10P10/00; H10P10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF MAKING A SEMICONDUCTOR TRANSLATOR HAVING A RECTIFLYING BARRIER, INCLUDING THE STEPS OF PREPARING A FIRST BODY OF SEMICONDUCTOR OF ONE CHARACTERISTIC, FUSING A BODY OF SEMICONDUCTOR OF ANOTHER CHARACTERISTIC, HOLDING THE FUSED BODY IN CONTACT WITH SAID FIRST BODY AND ESTABLISHING A TEMPERATURE GRADIENT FROM
Claim 2
Independent Claim
48 words
THE METHOD OF MAKING A SEMICONDUCTOR TRANSLATOR HAVING A RECTIFLYING BARRIER, INCLUDING THE STEPS OF PREPARING A FIRST BODY OF SEMICONDUCTOR OF ONE CHARACTERISTIC, FUSING A BODY OF SEMICONDUCTOR OF ANOTHER CHARACTERISTIC, HOLDING THE FUSED BODY IN CONTACT WITH SAID FIRST BODY AND ESTABLISHING A TEMPERATURE GRADIENT FROM
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |