Patent US2846488A successfully refreshed from Google Patents.
US2846488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrogenation catalysts
Assignee: Pure Oil Co
•
Filing: 1955-07-27
•
Granted: 1958-08-05
•
Expires: 1975-07-27
Abstract
No abstract record available.
Inventors
- 👤 Elmer L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:06
CPC Classifications
B; B01; B01J; B01J37/00; B01J23/00; B01J23/70; C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/28; C07C2523/30; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/75; C07C2523/755; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/904; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
THE METHOD OF CONDUCTING CATALYTIC REDUCTION REACTIONS IN THE PRESENCE OF A FREE METAL CATALYST WHICH COMPRISES PASSING A FINELY-DIVIDED SUPPORT MATERIAL INTO A CATALYST PREPARATION ZONE, MAINTAINING SAID SUPPORT MATERIAL IN A FLUIDIZED STATE THEREIN BY PASSAGE OF A REDUCING ATMOSPHERE THROUGH SAID CATALYST PREPARATION ZONE, INTRODUCING A HEAT-DECOMPOSABLE CARBONYL COMPOUND OF SAID METAL INTO SAID FLUIDIZED ZONE OF SUPPORT MATERIAL, MAINTAINING SAID CATALYST PREPARATION ZONE AT A TEMPERATURE ABOVE THE TEMPERATURE AT WHICH SAID METAL CARBONYL DECOMPOSES INTO THE FREE METAL AND CARBON MONOXIDE, SEPARATING SAID CARBON MONOXIDE FROM THE GASEOUS EFFLUENT FROM SAID CATALYST PREPARATING ZONE, SEPARATING CATALYTIC METAL-COATED SUPPORT MATERIAL FROM SAID CATALYST PREPARATION ZONE, UTILIZING SAID METAL-COATED SUPPORT MATERIAL AS THE CATALYST IN A REDUCTION REACTION IN A SEPARATE REACTOR, RECOVERING SPENT METAL-COATED SUPPORT MATERIAL FROM SAID SEPARATE REACTOR, PASSING SAID SPENT METAL-COATED SUPPORT MATERIAL IN ADMIXTURE WITH A SUFFICIENT QUANTITY OF SAID CARBON MONOXIDE TO REFORM THE METAL CARBONYL THEREFROM INTO A SECOND REACTOR, AND SEPARATELY RECOVERING THE SUPPORT MATERIAL AND SAID METAL CARBONYL FROM SAID SECOND REACTOR FOR RECYCLE TO SAID CATALYST PREPARATION ZONE.
Claim 2
Independent Claim
181 words
THE METHOD OF CONDUCTING CATALYTIC REDUCTION REACTIONS IN THE PRESENCE OF A FREE METAL CATALYST WHICH COMPRISES PASSING A FINELY-DIVIDED SUPPORT MATERIAL INTO A CATALYST PREPARATION ZONE, MAINTAINING SAID SUPPORT MATERIAL IN A FLUIDIZED STATE THEREIN BY PASSAGE OF A REDUCING ATMOSPHERE THROUGH SAID CATALYST PREPARATION ZONE, INTRODUCING A HEAT-DECOMPOSABLE CARBONYL COMPOUND OF SAID METAL INTO SAID FLUIDIZED ZONE OF SUPPORT MATERIAL, MAINTAINING SAID CATALYST PREPARATION ZONE AT A TEMPERATURE ABOVE THE TEMPERATURE AT WHICH SAID METAL CARBONYL DECOMPOSES INTO THE FREE METAL AND CARBON MONOXIDE, SEPARATING SAID CARBON MONOXIDE FROM THE GASEOUS EFFLUENT FROM SAID CATALYST PREPARATING ZONE, SEPARATING CATALYTIC METAL-COATED SUPPORT MATERIAL FROM SAID CATALYST PREPARATION ZONE, UTILIZING SAID METAL-COATED SUPPORT MATERIAL AS THE CATALYST IN A REDUCTION REACTION IN A SEPARATE REACTOR, RECOVERING SPENT METAL-COATED SUPPORT MATERIAL FROM SAID SEPARATE REACTOR, PASSING SAID SPENT METAL-COATED SUPPORT MATERIAL IN ADMIXTURE WITH A SUFFICIENT QUANTITY OF SAID CARBON MONOXIDE TO REFORM THE METAL CARBONYL THEREFROM INTO A SECOND REACTOR, AND SEPARATELY RECOVERING THE SUPPORT MATERIAL AND SAID METAL CARBONYL FROM SAID SECOND REACTOR FOR RECYCLE TO SAID CATALYST PREPARATION ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |