Patent US3243509A successfully refreshed from Google Patents.
US3243509A
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Apparatus for measuring the molten zone diameter in zone-melting processes
Assignee: Siemens Schuckertwerke AG
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Filing: 1963-04-26
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Granted: 1966-03-29
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Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Stut Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/08; C; C30; C30B; C30B13/00; C30B13/28; C30B13/30; G01B11/02; G01B11/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
FOR SEMICONDUCTOR-ROD ZONE-MELTING, A DEVICE FOR MEASURING THE DIAMETER OF THE MOLTEN ZONE ADJACENT THE SOLIDIFYING FRONT AT THE PHASE BOUNDARY BETWEEN THE SOLID AND LIQUID PHASES, SAID DEVICE COMPRISING INTENSITY RESPONSIVE TELEVISION CAMERA MEANS FOR SCANNING ACROSS THE WIDTH OF THE ROD THE SOLIDIFYING FRONT ADJACENT THE MOLTEN ZONE AT THE PHASE BOUNDARY TRANSITION FROM SOLID TO LIQUID PHASE, CIRCUIT MEANS CONNECTED TO SAID CAMERA MEANS RESPONDING TO A SUDDEN DIFFERENCE IN RADIATION INTENSITY
Claim 2
Dependent Claim
75 words
FOR SEMICONDUCTOR-ROD ZONE-MELTING, A DEVICE FOR MEASURING THE DIAMETER OF THE MOLTEN ZONE ADJACENT THE SOLIDIFYING FRONT AT THE PHASE BOUNDARY BETWEEN THE SOLID AND LIQUID PHASES, SAID DEVICE COMPRISING INTENSITY RESPONSIVE TELEVISION CAMERA MEANS FOR SCANNING ACROSS THE WIDTH OF THE ROD THE SOLIDIFYING FRONT ADJACENT THE MOLTEN ZONE AT THE PHASE BOUNDARY TRANSITION FROM SOLID TO LIQUID PHASE, CIRCUIT MEANS CONNECTED TO SAID CAMERA MEANS RESPONDING TO A SUDDEN DIFFERENCE IN RADIATION INTENSITY
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |