Patent US2797155A successfully refreshed from Google Patents.
US2797155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiation of nickel-containing iron ores
Assignee: Jones and Laughlin Steel Corp
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Filing: 1954-03-05
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Granted: 1957-06-25
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Expires: 1974-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harry H Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS OF BENEFICIATING LATERITE IRON ORE CONTAINING A MINOR PROPORTION OF NICKEL BY SELECTIVELY REMOVING NICKEL THEREFROM COMPRISING HEATING SAID ORE TO A TEMPERATURE SUFFICIENT TO VOLATILIZE NICKEL CHLORIDE, FORMING A GASEOUS ATMOSPHERE COMPRISING OXYGEN AND CHLORINE, THE VOLUME OF OXYGEN IN SAID ATMOSPHERE BEING GREATER THAN THE VOLUME OF CHLORINE, CONTINUOUSLY BRINGING SAID ATMOSPHERE INTO CONTACT WITH SAID ORE DURING SAID HEATING WHEREBY SAID NICKEL IS REACTED THEREWITH TO FORM A GASEOUS COMPOUND AND SAID IRON IS SUBSTANTIALLY UNREACTED WITH SAID CHLORINE, AND CONTINUOUSLY REMOVING FROM CONTACT WITH SAID ORE SAID ATMOSPHERE CONTAINING SAID GASEOUS NICKEL COMPOUND.
Claim 2
Dependent Claim
99 words
THE PROCESS OF BENEFICIATING LATERITE IRON ORE CONTAINING A MINOR PROPORTION OF NICKEL BY SELECTIVELY REMOVING NICKEL THEREFROM COMPRISING HEATING SAID ORE TO A TEMPERATURE SUFFICIENT TO VOLATILIZE NICKEL CHLORIDE, FORMING A GASEOUS ATMOSPHERE COMPRISING OXYGEN AND CHLORINE, THE VOLUME OF OXYGEN IN SAID ATMOSPHERE BEING GREATER THAN THE VOLUME OF CHLORINE, CONTINUOUSLY BRINGING SAID ATMOSPHERE INTO CONTACT WITH SAID ORE DURING SAID HEATING WHEREBY SAID NICKEL IS REACTED THEREWITH TO FORM A GASEOUS COMPOUND AND SAID IRON IS SUBSTANTIALLY UNREACTED WITH SAID CHLORINE, AND CONTINUOUSLY REMOVING FROM CONTACT WITH SAID ORE SAID ATMOSPHERE CONTAINING SAID GASEOUS NICKEL COMPOUND.
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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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |