Patent US3020128A successfully refreshed from Google Patents.
US3020128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing materials of high purity
Assignee: Texas Instruments Inc
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Filing: 1957-12-31
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Granted: 1962-02-06
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Willis A Adcock
- 👤 Raymond C Sangster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:07
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/048; C; C01; C01B; C01B25/00; C01B25/003; C01B25/01; C01B25/06; C01B33/00; C01B33/02; C01B33/04; C01B33/08; C01B33/107; C01B35/00; C01B35/02; C01B35/023; C22; C22B; C22B5/00; C22B5/02; C22B5/16; C23; C23C; C23C16/00; C23C16/06; C23C16/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S148/00; Y10S148/13; Y10S148/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A METHOD OF CONVERTING A VOLATILIZABLE HALIDE CONTAINING AT LEAST ONE ELEMENT SELECTED OF THE GROUP CONSISTING OF METALS AND METALLOIDS IN COMBINATION WITH A HALOGEN INTO A HIGHLY PURIFIED ELEMENTAL STATE OF SAID AT LEAST ONE ELEMENT WHICH COMPRISES PASSING A GASEOUS MIXTURE OF SAID HALIDE AND HYDROGEN INTO A FIRST REACTION ZONE MAINTAINED AT A TEMPERATURE SUFFICIENT TO CAUSE SUBSTANTIAL REACTION TO TAKE PLACE, WITH THE CONSEQUENT DEPOSITION OF SAID AT LEAST ONE ELEMENT IN THE FIRST REACTION ZONE AND FORMATION OF HYDROGEN HALIDE, REMOVING FROM THE FIRST REACTION ZONE A MIXTURE OF THE UNREACTED HALIDE, HYDROGEN AND THE HYDROGEN HALIDE, MIXING ZINC VAPOR WITH SAID MIXTURE IN A SECOND REACTION ZONE TO REDUCE PREFERENTIALLY THE HYDROGEN HALIDE FORMED BY THE REACTION IN THE FIRST REACTION ZONE, REMOVING THE ZINC COMPOUND FORMED IN THE SECOND REACTION ZONE, REPLACING THE HYDROGEN UTILIZED IN THE FIRST REACTION ZONE, AND RECIRCULATING THE RESULTANT MIXTURE OF HYDROGEN AND UNREACTED VOLATILIZABLE HALIDE THROUGH SAID FIRST REACTION ZONE.
Claim 2
Independent Claim
164 words
A METHOD OF CONVERTING A VOLATILIZABLE HALIDE CONTAINING AT LEAST ONE ELEMENT SELECTED OF THE GROUP CONSISTING OF METALS AND METALLOIDS IN COMBINATION WITH A HALOGEN INTO A HIGHLY PURIFIED ELEMENTAL STATE OF SAID AT LEAST ONE ELEMENT WHICH COMPRISES PASSING A GASEOUS MIXTURE OF SAID HALIDE AND HYDROGEN INTO A FIRST REACTION ZONE MAINTAINED AT A TEMPERATURE SUFFICIENT TO CAUSE SUBSTANTIAL REACTION TO TAKE PLACE, WITH THE CONSEQUENT DEPOSITION OF SAID AT LEAST ONE ELEMENT IN THE FIRST REACTION ZONE AND FORMATION OF HYDROGEN HALIDE, REMOVING FROM THE FIRST REACTION ZONE A MIXTURE OF THE UNREACTED HALIDE, HYDROGEN AND THE HYDROGEN HALIDE, MIXING ZINC VAPOR WITH SAID MIXTURE IN A SECOND REACTION ZONE TO REDUCE PREFERENTIALLY THE HYDROGEN HALIDE FORMED BY THE REACTION IN THE FIRST REACTION ZONE, REMOVING THE ZINC COMPOUND FORMED IN THE SECOND REACTION ZONE, REPLACING THE HYDROGEN UTILIZED IN THE FIRST REACTION ZONE, AND RECIRCULATING THE RESULTANT MIXTURE OF HYDROGEN AND UNREACTED VOLATILIZABLE HALIDE THROUGH SAID FIRST REACTION ZONE.
References Cited (Backward Citations)
US1046043A
Cited
US2142694A
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US2438892A
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US2441603A
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US2766112A
Cited
US2773745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |