Patent US2622950A successfully refreshed from Google Patents.
Patent US2737477A successfully refreshed from Google Patents.
US2737477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-04-27
•
Granted: 1956-03-06
•
Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Charles E Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:30
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A CYCLIC PROCESS FOR HYDROFORMING NAPHTHA CONTAINING A SUBSTANTIAL AMOUNT OF NAPHTHENES IN A SYSTEM INCLUDING AN ON-STREAM PRODUCTIVE PHASE AND A CATALYST REGENERATION PHASE, WHICH COMPRISES PROVIDING A PLURALITY OF FIXED OR STATIONARY BEDS OF CATALYST CONTAINING A PLATINUM GROUP METAL CARRIED ON AN ALUMINA SUPPORT, EMPLOYING AT LEAST ONE OF SAID BEDS OF CATALYST IN THE PRODUCTIVE PHASE WHILE ANOTHER OF SAID BEDS OF CATALYST FOULED DURING A PREVIOUS ON-STREAM PHASE IS UNDERGOING REGENERATION BY TREATMENT OF THE SAID CATALYST WITH A HYDROGEN-CONTAINING GAS, FEEDING SAID NAPHTHA IN VAPOR PHASE TO A BED OF CATALYST IN THE ON-STREAM PHASE, SIMULTANEOUSLY FEEDING A HYDROGEN-CONTAINING GAS TO SAID BED OF CATALYST EMPLOYED IN THE ON-STREAM PHASE, MAINTAINING TEMPERATURES OF FROM 850 TO 850* F. AND PRESSURES OF FROM ABOUT 100-500 LBS. PER SQUARE INCH GAUGE IN SAID BED OF CATALYST IN THE ON-STREAM PHASE, PERMITTING THE REACTANTS TO UNDERGO HYDROFORMING IN CONTACT WITH THE BED OF CATALYST IN THE ON-STREAM PHASE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT THE DESIRED CONVERSION AND WITH-
Claim 2
Dependent Claim
174 words
A CYCLIC PROCESS FOR HYDROFORMING NAPHTHA CONTAINING A SUBSTANTIAL AMOUNT OF NAPHTHENES IN A SYSTEM INCLUDING AN ON-STREAM PRODUCTIVE PHASE AND A CATALYST REGENERATION PHASE, WHICH COMPRISES PROVIDING A PLURALITY OF FIXED OR STATIONARY BEDS OF CATALYST CONTAINING A PLATINUM GROUP METAL CARRIED ON AN ALUMINA SUPPORT, EMPLOYING AT LEAST ONE OF SAID BEDS OF CATALYST IN THE PRODUCTIVE PHASE WHILE ANOTHER OF SAID BEDS OF CATALYST FOULED DURING A PREVIOUS ON-STREAM PHASE IS UNDERGOING REGENERATION BY TREATMENT OF THE SAID CATALYST WITH A HYDROGEN-CONTAINING GAS, FEEDING SAID NAPHTHA IN VAPOR PHASE TO A BED OF CATALYST IN THE ON-STREAM PHASE, SIMULTANEOUSLY FEEDING A HYDROGEN-CONTAINING GAS TO SAID BED OF CATALYST EMPLOYED IN THE ON-STREAM PHASE, MAINTAINING TEMPERATURES OF FROM 850 TO 850* F. AND PRESSURES OF FROM ABOUT 100-500 LBS. PER SQUARE INCH GAUGE IN SAID BED OF CATALYST IN THE ON-STREAM PHASE, PERMITTING THE REACTANTS TO UNDERGO HYDROFORMING IN CONTACT WITH THE BED OF CATALYST IN THE ON-STREAM PHASE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT THE DESIRED CONVERSION AND WITH-
References Cited (Backward Citations)
US2335684A
Cited
US2270715A
Cited
GB577008A
Cited
US2472844A
Cited
US2495262A
Cited
US2479110A
Cited
US2667461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |