US2907642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fusing pulverulent semiconductor material
Assignee: Siemens and Halske AG
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Filing: 1955-05-19
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Granted: 1959-10-06
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Expires: 1975-05-19
Abstract
No abstract record available.
Inventors
- 👤 Rummel Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:11
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/02; C30B11/00; C30B11/04; C30B11/08; C30B11/10; H; H10; H10P; H10P95/00; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
APPARATUS FOR PRODUCING HIGHLY PURE SEMICONDUCTOR BODIES OF THE CLASS OF SILICON COMPRISING A VESSEL CONTAINING A VERTICALLY DISPOSED HIGHLY PURE RODIKE SEMICONDUCTOR MEMBER OF THE CLASS OF SILICON, INDUCTIVE HEATING MEANS DISPOSED EXTERNALLY OF A LOWER PORTION OF SAID VESSEL TO HEAT THE LOWER END OF THE MEMBER AND PRODUCE A MOLTEN PORTION AT ITS LOWER END, SAID VESSEL HAVING A BOATTOM WALL ADAPTED TO SUPPORT A SUPPLY OF HIGHLY PURE POWDERED SEMICONDUCTOR PARTICLES OF A MATERIAL CORRESPONDING TO THE MATERIAL OF THE SEMICONDUCTOR MEMBER, A PLURALITY OF ACURATE VANES IN SAID VESSEL EXTENDING FROM A POINT ABOVE THE LOWER END OF SAID MEMBER DOWNWARDLY SUBSTANTIALLY TO SAID BOTTOM WALL, MEANS DEFINING AN INLET PASSAGE OPENING INTO SAID VESSEL TANGENTIALLY WITH RESPECT TO SAID VANES, AND MEANS FOR BLOWING A GAS THROUGH SAID PASSAGE TO PRODUCE A GYRATING STREAM TO PICK UP PARTICLES FROM SAID SUPPLY AND PROJECT THEM AGAINST THE MOLTEN PORTION OF SAID MEMBER FOR FUSION THEREWITH.
Claim 2
Dependent Claim
160 words
APPARATUS FOR PRODUCING HIGHLY PURE SEMICONDUCTOR BODIES OF THE CLASS OF SILICON COMPRISING A VESSEL CONTAINING A VERTICALLY DISPOSED HIGHLY PURE RODIKE SEMICONDUCTOR MEMBER OF THE CLASS OF SILICON, INDUCTIVE HEATING MEANS DISPOSED EXTERNALLY OF A LOWER PORTION OF SAID VESSEL TO HEAT THE LOWER END OF THE MEMBER AND PRODUCE A MOLTEN PORTION AT ITS LOWER END, SAID VESSEL HAVING A BOATTOM WALL ADAPTED TO SUPPORT A SUPPLY OF HIGHLY PURE POWDERED SEMICONDUCTOR PARTICLES OF A MATERIAL CORRESPONDING TO THE MATERIAL OF THE SEMICONDUCTOR MEMBER, A PLURALITY OF ACURATE VANES IN SAID VESSEL EXTENDING FROM A POINT ABOVE THE LOWER END OF SAID MEMBER DOWNWARDLY SUBSTANTIALLY TO SAID BOTTOM WALL, MEANS DEFINING AN INLET PASSAGE OPENING INTO SAID VESSEL TANGENTIALLY WITH RESPECT TO SAID VANES, AND MEANS FOR BLOWING A GAS THROUGH SAID PASSAGE TO PRODUCE A GYRATING STREAM TO PICK UP PARTICLES FROM SAID SUPPLY AND PROJECT THEM AGAINST THE MOLTEN PORTION OF SAID MEMBER FOR FUSION THEREWITH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |