Patent US2707706A successfully refreshed from Google Patents.
US2707706A
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Method of reducing catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1949-12-06
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Granted: 1955-05-03
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Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Werner A Bauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:19
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE IMPROVED PROCESS OF PREPARING AN OXIDIC IRON GROUP CATALYST FOR USE IN A HYDROCARBON SYNTHESIS REACTION WHICH COMPRISES ADDING TO SAID CATALYST IN THE INITIAL OXIDIC FORM A SUBSTANTIAL PROPORTION OF THE SAME IRON GROUP CATALYST PREVIOUSLY REDUCE TO CONTAIN LESS THAN ABOUT 5% OF REDUCIBLE OXYGEN, REDUCING THE MIXTURE WITH HYDROGEN AT A RATE SUCH THAT THE REDUCTION PERIOD IS ABOUT 1/2 TO 1/3 OF THE TIME REQUIRED TO REDUCE SIMILAR AMOUNTS OF OXIDIC IRON GROUP CATALYST UNMIXED WITH PREVIOUSLY REDUCED OXIDIC IRON GROUP CATALYST.
Claim 2
Dependent Claim
87 words
THE IMPROVED PROCESS OF PREPARING AN OXIDIC IRON GROUP CATALYST FOR USE IN A HYDROCARBON SYNTHESIS REACTION WHICH COMPRISES ADDING TO SAID CATALYST IN THE INITIAL OXIDIC FORM A SUBSTANTIAL PROPORTION OF THE SAME IRON GROUP CATALYST PREVIOUSLY REDUCE TO CONTAIN LESS THAN ABOUT 5% OF REDUCIBLE OXYGEN, REDUCING THE MIXTURE WITH HYDROGEN AT A RATE SUCH THAT THE REDUCTION PERIOD IS ABOUT 1/2 TO 1/3 OF THE TIME REQUIRED TO REDUCE SIMILAR AMOUNTS OF OXIDIC IRON GROUP CATALYST UNMIXED WITH PREVIOUSLY REDUCED OXIDIC IRON GROUP CATALYST.
References Cited (Backward Citations)
US2139602A
Cited
US2164292A
Cited
US2360787A
Cited
US2451879A
Cited
US2472501A
Cited
US2479435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |