Patent US2726951A successfully refreshed from Google Patents.
US2726951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing metal powder from metal carbonyl
Assignee: Huntington Alloys Corp
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Filing: 1952-07-29
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Granted: 1955-12-13
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Expires: 1972-07-29
Abstract
No abstract record available.
Inventors
- 👤 Ramsay Alexander Gray
- 👤 Albert E Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:41
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A PROCESS FOR PRODUCING METAL POWDER CHARACTERIZED BY A FIBROUS AND HAIR-LIKE STRUCTURE AND A BULK DENSITY OF ABOUT 0.3 TO 1.3 GRAMS PER CUBIC CENTIMETER BY DECOMPOSING METAL CARBONYL VAPOR, THE STEPS CONPRISING DIRECTING A STREAM OF METAL CARBONYL VAPOR OF AT LEAST 65* CONCENTRATION ADJACENT A HEATED SURFACE MAINTAINED AT AN ELEVATED DECOMPOSITION TEMPERATURE OF NOT MORE THAN ABOUT 400* C. WHILE MAINTAINING SAID VAPOR AT A FLOW RATE EQUIVALENT TO ABOUT 4 TO 10 LITRES OF LIQUID CARBONYL PER HOUR PER FOOT OF THE PERIMETER OF THE HEATED SURFACE CROSS SECTION, AND CAUSING SAID STREAM TO FLOW SUBSTANTIALLY LONGITUDINALLY ALONG SAID HEATED SURFACE WHILE CONTROLLING THE FLOW OF SAID STREAM DURING AT LEAST THE INITIAL PART OF THE DECOMPOSITION SO THAT THE VAPOR STREAM IS NOT MORE THAN 15 INCHES FROM A HEATED SURFACE AND SO THAT THE CROSS-SECTIONAL AREA OF SAID STREAM IS AT LEAST FIVE SQUARE FEET AND THE CROSS SECTION OF SAID STREAM IS OF SUBSTANTIALLY ELONGATED CONFIGURATION.
Claim 2
Dependent Claim
165 words
IN A PROCESS FOR PRODUCING METAL POWDER CHARACTERIZED BY A FIBROUS AND HAIR-LIKE STRUCTURE AND A BULK DENSITY OF ABOUT 0.3 TO 1.3 GRAMS PER CUBIC CENTIMETER BY DECOMPOSING METAL CARBONYL VAPOR, THE STEPS CONPRISING DIRECTING A STREAM OF METAL CARBONYL VAPOR OF AT LEAST 65* CONCENTRATION ADJACENT A HEATED SURFACE MAINTAINED AT AN ELEVATED DECOMPOSITION TEMPERATURE OF NOT MORE THAN ABOUT 400* C. WHILE MAINTAINING SAID VAPOR AT A FLOW RATE EQUIVALENT TO ABOUT 4 TO 10 LITRES OF LIQUID CARBONYL PER HOUR PER FOOT OF THE PERIMETER OF THE HEATED SURFACE CROSS SECTION, AND CAUSING SAID STREAM TO FLOW SUBSTANTIALLY LONGITUDINALLY ALONG SAID HEATED SURFACE WHILE CONTROLLING THE FLOW OF SAID STREAM DURING AT LEAST THE INITIAL PART OF THE DECOMPOSITION SO THAT THE VAPOR STREAM IS NOT MORE THAN 15 INCHES FROM A HEATED SURFACE AND SO THAT THE CROSS-SECTIONAL AREA OF SAID STREAM IS AT LEAST FIVE SQUARE FEET AND THE CROSS SECTION OF SAID STREAM IS OF SUBSTANTIALLY ELONGATED CONFIGURATION.
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) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |