Patent US2777763A successfully refreshed from Google Patents.
US2777763A
Expired / Lapsed
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Method of producing titanium
Assignee: Ethyl Corp
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Filing: 1955-09-14
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Granted: 1957-01-15
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:33
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR THE PREPARATION OF TITANIUM COMPRISING REACTING ESSENTIALLY ANHYDROUS TITANIUM DIOXIDE AT ELEVATED TEMPERATURE OF AT LEAST ABOUT 700*C. FOR AT LEAST ABOUT 30 MINUTES WITH A MOLTEN ANHYDROUS CALCIUM HALIDE AND AN ALKALI METAL IN PROPORTIONS SUCH THAT THE AMOUNT OF CALCIUM HALIDE IS AT LEAST 100 PERCENT IN EXCESS IN MOLES AND THE AMOUNT OF ALKALI METAL IS AT LEAST 140 PERCENT IN EXCESS IN MOLE OF THE AMOUNTS REQUIRED BY THE EQUATION.
Claim 2
Dependent Claim
77 words
A PROCESS FOR THE PREPARATION OF TITANIUM COMPRISING REACTING ESSENTIALLY ANHYDROUS TITANIUM DIOXIDE AT ELEVATED TEMPERATURE OF AT LEAST ABOUT 700*C. FOR AT LEAST ABOUT 30 MINUTES WITH A MOLTEN ANHYDROUS CALCIUM HALIDE AND AN ALKALI METAL IN PROPORTIONS SUCH THAT THE AMOUNT OF CALCIUM HALIDE IS AT LEAST 100 PERCENT IN EXCESS IN MOLES AND THE AMOUNT OF ALKALI METAL IS AT LEAST 140 PERCENT IN EXCESS IN MOLE OF THE AMOUNTS REQUIRED BY THE EQUATION.
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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |