Patent US3938713A successfully refreshed from Google Patents.
US2861791A
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Method of and apparatus for reacting magnesium with a volatile metal halide
Assignee: Dow Chemical Co
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Filing: 1957-09-16
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Granted: 1958-11-25
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas S Chisholm
- 👤 Don F Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:23
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
58 words
AN APPARATUS IN WHICH TO PRODUCE IN THE FORM OF METAL SPONGE A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM BY THE REDUCTION OF A VOLATILE HALIDE THEREOF WITH THE FORMATION OF MAGNESIUM CHLORIDE AS A BY-PRODUCT WHICH COMPRISES A REACTION VESSEL ADAPTED TO CONTAIN THE VAPOR OF THE HALIDE TO BE REDUCED TO SPONGE
Claim 2
Independent Claim
58 words
AN APPARATUS IN WHICH TO PRODUCE IN THE FORM OF METAL SPONGE A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM BY THE REDUCTION OF A VOLATILE HALIDE THEREOF WITH THE FORMATION OF MAGNESIUM CHLORIDE AS A BY-PRODUCT WHICH COMPRISES A REACTION VESSEL ADAPTED TO CONTAIN THE VAPOR OF THE HALIDE TO BE REDUCED TO SPONGE
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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |