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Patent US2495497A successfully refreshed from Google Patents.
US2495497A
Expired / Lapsed
US
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Method of liquid stabilization of nickel catalysts
Assignee: Individual
•
Filing: 1943-01-22
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Granted: 1950-01-24
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Expires: 1963-01-22
Abstract
No abstract record available.
Inventors
- 👤 Ahlberg Jacob Elston
- 👤 Clarence F Hiskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:20
CPC Classifications
B; B01; B01J; B01J25/00; B01J25/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A METHOD OF STABILIZING A PYROPHORIC REDUCED NICKEL CATALYST COMPRISING THE STEPS OF WETTING SAID CATALYST WITH WATER TO FORM AN INERT SURFACE FILM THEREON AND EXPOSING SAID WETTED AGENT TO THE ACTION OF AIR FOR A SUFFICIENT TIME TO PERMIT AT LEAST PARTIAL EVAPORATION OF SAID SURFACE FILM.
References Cited (Backward Citations)
GB171976A
Cited
US1431982A
Cited
US1893979A
Cited
US2205552A
Cited
US2166183A
Cited
US2257800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |