US2807532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing nickel catalyst
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-12-30
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Granted: 1957-09-24
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Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 John H Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:52
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; B22F9/26; B01; B01J; B01J23/00; B01J23/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
IN THE THERMAL DECOMPSITION OF NICKEL FORMATE TO PROVIDE A FINELY-DIVIDED NICKEL FOR CATALYSIS, THE STEPS COMPRISING HEATING FROM ABOUT 300* TO ABOUT 310*C., A NICKEL FORMATE IN AN ATMOSPHERE OF ESSENTIALLY CARBON DIOXIDE WHILE CONTINUOUSLY REMOVING A PORTION OF THE RESULTING ATMOSPHERE AND REPLACING THE WITHDRAWING GASES WITH CARBON DIOXIDE.
References Cited (Backward Citations)
US1390685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |