US3764295A
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Method of manufacturing low alloy steel powder having a low content of oxidic constituents
Assignee: Hoganas AB
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Filing: 1972-05-03
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Granted: 1973-10-09
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Expires: 1992-05-03
Abstract
Abstract MOLTEN STEEL IS ATOMIZED IN AN OXIDIZING ENVIRONMENT. THE PARTICLES THUS PRODUCED CONSIST OF A METALLIC CORE AND AN OXIDE SKIN. THE PARTICLES ARE TREATED WITH AN ACID TO REMOVE THE OXIDE SKIN, AND ARE SUBSEQUENTLY RINSED, DRIED AND ANNEALED TO PRODUCE A SUBSTANTIALLY OXIDE-FREE STEEL POWER HAVING DUCTILE PARTICLES.
Inventors
- 👤 P Lindskog
- 👤 A Bengtsson
- 👤 S Grek
- 👤 L Lagerholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; C; C22; C22C; C22C33/00; C22C33/02; C22C33/0235
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |