US2768098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for precipitating metal from the vaporous state onto plates, particularly for the production of selenium coated rectifier plates
Assignee: Siemens Schuckertwerke AG
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Filing: 1951-09-07
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Granted: 1956-10-23
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Expires: 1971-09-07
Abstract
No abstract record available.
Inventors
- 👤 Hoppe Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:35
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0431; H10P72/0436; C; C23; C23C; C23C14/00; C23C14/22; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10D48/0431; H10P14/00; H10P14/20; H10P14/22; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF VAPORIZING SELENIUM ONTO PLATES IN THE MANUFACTURING OF DRY RECTIFIERS, WHICH COMPRISES PASSING THE PLATES IN ONE DIRECTION AND AT UNIFORM SPEED OVER A SOURCE OF SELENIUM VAPOR TO ALLOW SELENIUM PRECIPITATION ON THE PLATES, THEREAFTER MOVING SAID PLATES BEYOND THE PRECIPITATING RANGE OF SAID SOURCE OF SELENIUM VAPOR FOR A GIVEN PERIOD OF TIME, DURING WHICH TIME PERIOD THE VAPOR PRECIPITATED ON THE PLATES WILL CRYSTALLIZE, AND THEN REPEATING THE FOREGOING STEPS CONTINUOUSLY UNTIL THE TOTAL THICKNESS OF THE SUCCESSIVLEY PRECIPITATED AND CRYSTALLIZED LAYERS HAS REACHED THE DESIRED THICKNESS.
Claim 2
Independent Claim
93 words
THE METHOD OF VAPORIZING SELENIUM ONTO PLATES IN THE MANUFACTURING OF DRY RECTIFIERS, WHICH COMPRISES PASSING THE PLATES IN ONE DIRECTION AND AT UNIFORM SPEED OVER A SOURCE OF SELENIUM VAPOR TO ALLOW SELENIUM PRECIPITATION ON THE PLATES, THEREAFTER MOVING SAID PLATES BEYOND THE PRECIPITATING RANGE OF SAID SOURCE OF SELENIUM VAPOR FOR A GIVEN PERIOD OF TIME, DURING WHICH TIME PERIOD THE VAPOR PRECIPITATED ON THE PLATES WILL CRYSTALLIZE, AND THEN REPEATING THE FOREGOING STEPS CONTINUOUSLY UNTIL THE TOTAL THICKNESS OF THE SUCCESSIVLEY PRECIPITATED AND CRYSTALLIZED LAYERS HAS REACHED THE DESIRED THICKNESS.
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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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |