Patent US5388555A successfully refreshed from Google Patents.
Patent US2851347A successfully refreshed from Google Patents.
US2851347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of iron powder
Assignee: BASF SE
•
Filing: 1956-03-02
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Granted: 1958-09-09
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Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Schlecht Leo
- 👤 Oestreicher Ernst
- 👤 Bergmann Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:27
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN THE PRODUCTION OF IRON POWDER BY THERMAL DECOMPOSITION OF IRON CARBONYL VAPOR IN THE HOT FREE SPACE OF A DECOMPOSITION CHAMBER, THE IMPROVEMENT FOR PRODUCING IRON POWDER IN WHICH THE PARTICLE SIZE OF SUBSTANTIALLY ALL OF THE PARTICLES DOES NOT EXCEED 5 MICRONS WHICH COMPRISES SUPPLYING AT LEAST ABOUT 30 KILOGRAMS PER HOUR OF IRON CARBONYL PER CUBIC METER OF DECOMPO-
Claim 2
Dependent Claim
62 words
IN THE PRODUCTION OF IRON POWDER BY THERMAL DECOMPOSITION OF IRON CARBONYL VAPOR IN THE HOT FREE SPACE OF A DECOMPOSITION CHAMBER, THE IMPROVEMENT FOR PRODUCING IRON POWDER IN WHICH THE PARTICLE SIZE OF SUBSTANTIALLY ALL OF THE PARTICLES DOES NOT EXCEED 5 MICRONS WHICH COMPRISES SUPPLYING AT LEAST ABOUT 30 KILOGRAMS PER HOUR OF IRON CARBONYL PER CUBIC METER OF DECOMPO-
References Cited (Backward Citations)
US1836732A
Cited
US2597701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |