Patent US2840465A successfully refreshed from Google Patents.
US2840465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing titanium
Assignee: Dow Chemical Co
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Filing: 1952-10-20
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Granted: 1958-06-24
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Douglas S Chisholm
- 👤 Don F Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:58
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/14; C22B34/12; C22B34/1263; C22B34/1268; C22B34/1272; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF PRODUCING TITANIUM SPONGE BY REACTING MAGNESIUM WITH TITANIUM TETRACHLORIDE WHICH COMPRISES DEPOSITING UPON A SUPPORTING SURFACE IN AN ATMOSPHERE CONTAINING TITANIUM TETRACHLORIDE VAPOR A PILE OF MAGNESIUM IN PARTICULATE FORM, SAID SURFACE HAVING A TEMPERATURE ABOVE THE MELTING POINT OF MAGNESIUM CHLORIDE WHEREBY THE MAGNESIUM PARTICLES BURN IN THE TITANIUM TETRACHLORIDE VAPOR FORMING TITANIUM SPONGE IN SITU AND MOLTEN MAGNESIUM CHLORIDE; REMOVING HEAT FROM THE BURN-
Claim 2
Independent Claim
69 words
THE METHOD OF PRODUCING TITANIUM SPONGE BY REACTING MAGNESIUM WITH TITANIUM TETRACHLORIDE WHICH COMPRISES DEPOSITING UPON A SUPPORTING SURFACE IN AN ATMOSPHERE CONTAINING TITANIUM TETRACHLORIDE VAPOR A PILE OF MAGNESIUM IN PARTICULATE FORM, SAID SURFACE HAVING A TEMPERATURE ABOVE THE MELTING POINT OF MAGNESIUM CHLORIDE WHEREBY THE MAGNESIUM PARTICLES BURN IN THE TITANIUM TETRACHLORIDE VAPOR FORMING TITANIUM SPONGE IN SITU AND MOLTEN MAGNESIUM CHLORIDE; REMOVING HEAT FROM THE BURN-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |