Patent US2553433A successfully refreshed from Google Patents.
US2553433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1947-05-29
•
Granted: 1951-05-15
•
Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Hans G Vesterdal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:30
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/745; B01J23/76; B01J23/78; B01J23/84; B01J23/85; B01J23/86; B01J23/862; B01J23/888; C07C1/043; C07C1/0435; C07C1/044; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/30; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/70; C07C2523/72; C07C2523/74; C07C2523/745; C07C2527/00; C07C2527/20; C07C2527/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN IMPROVED PROCESS FOR PRODUCING VALUABLE CONVERSION PRODUCTS FROM CO AND H2 IN THE PRESENCE OF IRON CATALYSTS, WHICH COMPRISES CONTACTING A GAS CONTAINING CO AND H2 IN SYNTHESIS PROPORTIONS AT SYNTHESIS CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF A REDUCED MIXTURE OF A MAJOR PROPORTION OF AN IRON OXIDE, A MINOR PROPORTION OF COPPER CHROMITE AND A MINOR AMOUNT OF AN ALKALI METAL COMPOUND PROMOTER CAPABLE OF INCREASING THE SELECTIVITY OF THE CATALYST FOR THE SYNTHESIS REACTION.
Claim 2
Dependent Claim
78 words
AN IMPROVED PROCESS FOR PRODUCING VALUABLE CONVERSION PRODUCTS FROM CO AND H2 IN THE PRESENCE OF IRON CATALYSTS, WHICH COMPRISES CONTACTING A GAS CONTAINING CO AND H2 IN SYNTHESIS PROPORTIONS AT SYNTHESIS CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF A REDUCED MIXTURE OF A MAJOR PROPORTION OF AN IRON OXIDE, A MINOR PROPORTION OF COPPER CHROMITE AND A MINOR AMOUNT OF AN ALKALI METAL COMPOUND PROMOTER CAPABLE OF INCREASING THE SELECTIVITY OF THE CATALYST FOR THE SYNTHESIS REACTION.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |