US2701216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making surface-type and point-type rectifiers and crystalamplifier layers from elements
Assignee: International Standard Electric Corp
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Filing: 1950-04-05
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Granted: 1955-02-01
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Expires: 1970-04-05
Abstract
No abstract record available.
Inventors
- 👤 Seiler Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:03
CPC Classifications
H; H10; H10F; H10F30/00; C; C01; C01B; C01B35/00; C01B35/02; C30; C30B; C30B25/00; C30B25/02; C30B25/08; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D62/00; H10D62/60; H10D64/00; H10D64/20; H10D99/00; H10F71/00; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/3438; H10P14/3441; H10P14/3442; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/006; Y10S148/067; Y10S438/00; Y10S438/914; Y10S438/925; Y10S438/935; Y10S438/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE METHOD OF MAKING SEMI-CONDUCTORS EACH HAVING A PLURALITY OF DIFFERENT CONDUCTIVITY ZONES THEREIN, THE STEPS OF SIMULTANEOUSLY DEPOSITING FROM THE VAPOR STATE ONTO A BASE MATERIAL A SEMI-CONDUCTING SUBSTANCE COMMINGLED WITH AN IMPURITY SUBSTANCE SELECTED FROM A GROUP CONSISTING OF DONOR AND ACCEPTOR IMPURITIES, AND VARYING THE PROPORTION OF SAID SUBSTANCES WHILE APPLYING THEM TO THE BASE IN THE FORM OF A COMPOSITE LAYER OF SAID SUBSTANCES GRADUATED IN ITS CROSS-SECTION AS BETWEEN AMOUNTS OF THE TWO SUBSTANCES APPLIED.
Claim 2
Dependent Claim
81 words
IN THE METHOD OF MAKING SEMI-CONDUCTORS EACH HAVING A PLURALITY OF DIFFERENT CONDUCTIVITY ZONES THEREIN, THE STEPS OF SIMULTANEOUSLY DEPOSITING FROM THE VAPOR STATE ONTO A BASE MATERIAL A SEMI-CONDUCTING SUBSTANCE COMMINGLED WITH AN IMPURITY SUBSTANCE SELECTED FROM A GROUP CONSISTING OF DONOR AND ACCEPTOR IMPURITIES, AND VARYING THE PROPORTION OF SAID SUBSTANCES WHILE APPLYING THEM TO THE BASE IN THE FORM OF A COMPOSITE LAYER OF SAID SUBSTANCES GRADUATED IN ITS CROSS-SECTION AS BETWEEN AMOUNTS OF THE TWO SUBSTANCES APPLIED.
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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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |