US2587149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofining with sulfate regenerated catalyst
Assignee: Individual
•
Filing: 1948-02-10
•
Granted: 1952-02-26
•
Expires: 1968-02-10
Abstract
No abstract record available.
Inventors
- 👤 Marion H Gwynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; C; C10; C10G; C10G45/00; C10G45/02; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF HYDROFINING HYDROCARBONS AND SUBSTITUTED HYDROCARBONS SUBSTANTIALLY IN THE VAPOR PHASE AND WHICH COMPRISES CONTINUOUSLY AND COUNTERCURRENTLY CONTACTING THE VAPOR WITH USED CATALYTIC SURFACES AT A SUPERATMOSPHERIC TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL PYROLYSIS OCCURS WITH SAID VAPORS, THE HYDROFINING PRESSURE BEING BETWEEN 1 AND 100 ATMOSPHERES, SAID CATALYTIC SURFACES COMPRISING AN INORGANIC COMPOUND OF A METAL SELECTED FROM THE GROUP WHICH CONSISTS OF IRON, COBALT, NICKEL, AND COPPER,
Claim 2
Independent Claim
71 words
A METHOD OF HYDROFINING HYDROCARBONS AND SUBSTITUTED HYDROCARBONS SUBSTANTIALLY IN THE VAPOR PHASE AND WHICH COMPRISES CONTINUOUSLY AND COUNTERCURRENTLY CONTACTING THE VAPOR WITH USED CATALYTIC SURFACES AT A SUPERATMOSPHERIC TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL PYROLYSIS OCCURS WITH SAID VAPORS, THE HYDROFINING PRESSURE BEING BETWEEN 1 AND 100 ATMOSPHERES, SAID CATALYTIC SURFACES COMPRISING AN INORGANIC COMPOUND OF A METAL SELECTED FROM THE GROUP WHICH CONSISTS OF IRON, COBALT, NICKEL, AND COPPER,
References Cited (Backward Citations)
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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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |