US3068066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of double salts of niobium chloride and tantalum chloride
Assignee: BASF Schweiz AG
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Filing: 1960-03-08
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Granted: 1962-12-11
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Expires: 1980-03-08
Abstract
No abstract record available.
Inventors
- 👤 Scheller Walter
- 👤 Renard Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
C; C01; C01G; C01G33/00; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A PROCESS FOR PRODUCING LOWER VALENCY TANTALUM POTASSIUM DOUBLE CHLORIDE, FROM HIGHER VALENCY TANTALUM CHLORIDE AND POTASSIUM CHLORIDE, THE IMPROVEMENT OF CONTACTING A STREAM OF HYDROGEN WITH TANTALUM PENTACHLORIDE AT A TEMPERATURE IN THE VINCINITY OF THE MELTING POINT OF THE LATTER AND PASSING THE RESULTING STREAM OF HYDROGEN LADEN WITH TANTALUM PENTACHLORIDE VAPOR UPWARDLY THORUGH A REACTION ZONE OF SOLID GRANULAR POTASSIUM CHLORIDE HAVING A PARTICLE SIZE OF ABOUT 2 MILLIMETERS AND LARGER, WHILE HEATING SAID ZONE AT A TEMPERATURE ABOVE 610* C. AND BELOW THE MELTING POINT OF POTASSIUM CHLORIDE, AND ALLOWING THE
Claim 2
Dependent Claim
96 words
IN A PROCESS FOR PRODUCING LOWER VALENCY TANTALUM POTASSIUM DOUBLE CHLORIDE, FROM HIGHER VALENCY TANTALUM CHLORIDE AND POTASSIUM CHLORIDE, THE IMPROVEMENT OF CONTACTING A STREAM OF HYDROGEN WITH TANTALUM PENTACHLORIDE AT A TEMPERATURE IN THE VINCINITY OF THE MELTING POINT OF THE LATTER AND PASSING THE RESULTING STREAM OF HYDROGEN LADEN WITH TANTALUM PENTACHLORIDE VAPOR UPWARDLY THORUGH A REACTION ZONE OF SOLID GRANULAR POTASSIUM CHLORIDE HAVING A PARTICLE SIZE OF ABOUT 2 MILLIMETERS AND LARGER, WHILE HEATING SAID ZONE AT A TEMPERATURE ABOVE 610* C. AND BELOW THE MELTING POINT OF POTASSIUM CHLORIDE, AND ALLOWING THE
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |