US2887443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-cathode production of titanium
Assignee: Dow Chemical Co
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Filing: 1957-02-15
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Granted: 1959-05-19
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Expires: 1977-02-15
Abstract
No abstract record available.
Inventors
- 👤 Robert D Blue
- 👤 Marshall P Neipert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/02; C25C7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF PRODUCING DUCTILE TITANIUM WHICH COMPRISES CHARGING AN ELECTROLYTIC CELL WITH A HALIDE SALT THE CLASS CONSISTING OF THE HALIDES OF ALKALI AND ALKALINE THE CLASS CONSISTING OF THE HALIDES OF ALKALI AND ALKALINE EARTH METAL HALIDES AND MIXTURES THEREOF AND WITH LOWERVALENCE TITANIUM HALIDES IN AN AMOUNT BETWEEN 8 AND 16 PERCENT BY WEIGHT OF THE TITANIUM FRACTION PROVIDED BY SAID TITANIUM HALIDES BASED ON THE WEIGHT OF SAID BATH, MAKING THE ANODE OF SAID CHAMBER AN IMPURE TITANIUM METAL CONSISTING OF AT LEAST 90 PERCENT TITANIUM AND THE CATHODE A RETRACTABLE CONDUCTOR, CREATING AN ARC BETWEEN THE SURFACE OF SAID SALT MIXTURE AND THE RETRACTABLE CATHODE, COLLECTING DUCTILE TITANIUM O N THE CATHODE, GRADUALLY RETRACTING THE CATHODE WHILE MAINTAINING THE ARC, AND THEREAFTER RECOVERING THE TITANIUM THUS COLLECTED.
Claim 2
Independent Claim
132 words
THE METHOD OF PRODUCING DUCTILE TITANIUM WHICH COMPRISES CHARGING AN ELECTROLYTIC CELL WITH A HALIDE SALT THE CLASS CONSISTING OF THE HALIDES OF ALKALI AND ALKALINE THE CLASS CONSISTING OF THE HALIDES OF ALKALI AND ALKALINE EARTH METAL HALIDES AND MIXTURES THEREOF AND WITH LOWERVALENCE TITANIUM HALIDES IN AN AMOUNT BETWEEN 8 AND 16 PERCENT BY WEIGHT OF THE TITANIUM FRACTION PROVIDED BY SAID TITANIUM HALIDES BASED ON THE WEIGHT OF SAID BATH, MAKING THE ANODE OF SAID CHAMBER AN IMPURE TITANIUM METAL CONSISTING OF AT LEAST 90 PERCENT TITANIUM AND THE CATHODE A RETRACTABLE CONDUCTOR, CREATING AN ARC BETWEEN THE SURFACE OF SAID SALT MIXTURE AND THE RETRACTABLE CATHODE, COLLECTING DUCTILE TITANIUM O N THE CATHODE, GRADUALLY RETRACTING THE CATHODE WHILE MAINTAINING THE ARC, AND THEREAFTER RECOVERING THE TITANIUM THUS COLLECTED.
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |