Patent US3470039A successfully refreshed from Google Patents.
US3470039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous junction growth
Assignee: Texas Instruments Inc
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Filing: 1966-12-21
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Granted: 1969-09-30
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Paul C Goundry
- 👤 James C Boatman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:55
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; C30B15/02; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10S148/00; Y10S148/107; Y10S438/00; Y10S438/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN THE PROCESS OF FORMING A MONOCRYSTALLINE ROD OF SEMICONDUCTOR MATERIAL, THE STEPS OF: (A) HEATING THE END OF A FEED ROD OF SEMICONDUCTOR MATERIAL HAVING A FIRST CONDUCTIVITY TO FORM A MOLTEN MASS THEREOF SUPPORTED ON THE END OF THE ROD BY THE SURFACE TENSION OF THE MOLTEN MASS, (B) HEATING THE END OF THE FEED ROD OF SEMICONDUCTOR MATERIAL HAVING A SECOND CONDUCTIVITY TO FORM A MOLTEN MASS THEREOF SUPPORTED ON THE EDN OF THE ROD BY THE SURFACE TENSION OF THE MOLTEN MASS, (C) MAINTAINING THE FIRST MOLTEN MASS SEPARATE FROM THE SECOND MOLTEN MASS UNTIL THEY HAVE PASSED THROUGH SPACED SHAPING GUIDE APERTURES, AND (D) DRAWING THE MOLTEN MASSES THROUGH THE SPACED APERTURES SO THAT THE TWO MOLTEN MASSES ARE DRAWN TOGETHER AT THE LIQUID-SOLID INTERFACE BY VIRTUE OF THEIR MOLTEN CONDITION TO FORM A CONTINUOUS JUNCTION AT THE INTERFACE BETWEEN THE ONCE MOLTEN MASSES.
Claim 2
Dependent Claim
149 words
IN THE PROCESS OF FORMING A MONOCRYSTALLINE ROD OF SEMICONDUCTOR MATERIAL, THE STEPS OF: (A) HEATING THE END OF A FEED ROD OF SEMICONDUCTOR MATERIAL HAVING A FIRST CONDUCTIVITY TO FORM A MOLTEN MASS THEREOF SUPPORTED ON THE END OF THE ROD BY THE SURFACE TENSION OF THE MOLTEN MASS, (B) HEATING THE END OF THE FEED ROD OF SEMICONDUCTOR MATERIAL HAVING A SECOND CONDUCTIVITY TO FORM A MOLTEN MASS THEREOF SUPPORTED ON THE EDN OF THE ROD BY THE SURFACE TENSION OF THE MOLTEN MASS, (C) MAINTAINING THE FIRST MOLTEN MASS SEPARATE FROM THE SECOND MOLTEN MASS UNTIL THEY HAVE PASSED THROUGH SPACED SHAPING GUIDE APERTURES, AND (D) DRAWING THE MOLTEN MASSES THROUGH THE SPACED APERTURES SO THAT THE TWO MOLTEN MASSES ARE DRAWN TOGETHER AT THE LIQUID-SOLID INTERFACE BY VIRTUE OF THEIR MOLTEN CONDITION TO FORM A CONTINUOUS JUNCTION AT THE INTERFACE BETWEEN THE ONCE MOLTEN MASSES.
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |