US2932565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making dieexpressed metal sponge of group iv, subgroup a
Assignee: Dow Chemical Co
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Filing: 1957-04-17
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Granted: 1960-04-12
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Expires: 1977-04-17
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 19:37
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0291; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1268; C22B34/1272; C22B34/14; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN THE METHOD OF PRODUCING A METAL SELECTED FROM THE GROUP CONSISTING OF HAFNIUM, TITANIUM, THROIUM, AND ZIRCONIUM FROM A HALIDE BY MEANS OF A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS WHEREIN THE REDUCING METAL IS CONTINUOUSLY CAUSED TO FALL ON A ROTATALE SURFACE IN AN ATMOSPHERE COMPRISING AN INERT GAS HEATED TO A TEMPERATURE NOT LESS THAN THE MELTING POINT OF THE HALIDE OF THE REDUCING METAL BEING PRODUCED TO EFFECT A REACTION BETWEEN THE REDUCING METAL AND THE HALIDE IN THE VAPOR STATE ON THE ROTATABLE SURFACE TO PRODUCE A REACTION PRODUCT COMPRISING THE METAL SPONGE OF THE METAL TO BE PRODUCED AND THE HALIDE OF THE REDUCING METAL, THE IMPROVEMENT CONSISTING OF ALTERNATE ROTATION OF THE SURFACE AND REMOVAL OF A PORTION OF THE REACTION PRODUCT FORMED THEREON, SAID REMOVAL BEING ACCOMPLISHED BY PUSHING A PORTION OF THE THUS-PRODUCED REACTION PRODUCT RADIALLY OUTWARDL TO THE PERIPHERY OF THE SAID SURFACE, AND DIE-EXPRESSING THE REACTION PRODUCT THUS REMOVED.
Claim 2
Dependent Claim
168 words
IN THE METHOD OF PRODUCING A METAL SELECTED FROM THE GROUP CONSISTING OF HAFNIUM, TITANIUM, THROIUM, AND ZIRCONIUM FROM A HALIDE BY MEANS OF A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS WHEREIN THE REDUCING METAL IS CONTINUOUSLY CAUSED TO FALL ON A ROTATALE SURFACE IN AN ATMOSPHERE COMPRISING AN INERT GAS HEATED TO A TEMPERATURE NOT LESS THAN THE MELTING POINT OF THE HALIDE OF THE REDUCING METAL BEING PRODUCED TO EFFECT A REACTION BETWEEN THE REDUCING METAL AND THE HALIDE IN THE VAPOR STATE ON THE ROTATABLE SURFACE TO PRODUCE A REACTION PRODUCT COMPRISING THE METAL SPONGE OF THE METAL TO BE PRODUCED AND THE HALIDE OF THE REDUCING METAL, THE IMPROVEMENT CONSISTING OF ALTERNATE ROTATION OF THE SURFACE AND REMOVAL OF A PORTION OF THE REACTION PRODUCT FORMED THEREON, SAID REMOVAL BEING ACCOMPLISHED BY PUSHING A PORTION OF THE THUS-PRODUCED REACTION PRODUCT RADIALLY OUTWARDL TO THE PERIPHERY OF THE SAID SURFACE, AND DIE-EXPRESSING THE REACTION PRODUCT THUS REMOVED.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |