US2707706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing catalyst
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1949-12-06
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Granted: 1955-05-03
•
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 04:47
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.
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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) | 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 |