US2831908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroisomerization process
Assignee: Gulf Research and Development Co
•
Filing: 1955-05-17
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Granted: 1958-04-22
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Expires: 1975-05-17
Abstract
No abstract record available.
Inventors
- 👤 William C Starnes
- 👤 Robert C Zabor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:56
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C07; C07C; C07C5/00; C07C5/22; C07C5/2206; C07C5/226; C07C5/27; C07C5/2702; C07C5/2724; C07C5/2767; C07C5/277; C07C5/2791; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HYDROISOMERIZATION PROCESS WHICH COMPRISES CONTACTING A GASOLINE BOILING RANGE HYDROCARBON CHARGE COMPRISING AT LEAST 85 VOLUME PERCENT N-PENTANE AND THE REST CONSISTING ESSENTIALLY OF OTHER OPEN CHAIN PARAFFINIC HYDROCARBONS IN ADMIXTURE WITH HYDROGEN IN A RATIO OF FROM 100 TO 400 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF HYDROCARBON IN THE CHARGE WITH A SUPPORTED PLATINUM CATALYST CONTAINING FROM 0.1 TO 5.0 PERCENT BY WEIGHT PLATINUM AT A REACTION TEMPERATURE FROM 600* TO 900*F., A PRESSURE FROM 20 TO 2,000 POUNDS PER SQUARE INCH GAUGE AND AT A CHARGE LIQUID HOURLY SPACE VELOCITY OF FROM 8 TO 12 VOLUMES PER VOLUME OF CATALYST PER HOUR.
Claim 2
Dependent Claim
107 words
A HYDROISOMERIZATION PROCESS WHICH COMPRISES CONTACTING A GASOLINE BOILING RANGE HYDROCARBON CHARGE COMPRISING AT LEAST 85 VOLUME PERCENT N-PENTANE AND THE REST CONSISTING ESSENTIALLY OF OTHER OPEN CHAIN PARAFFINIC HYDROCARBONS IN ADMIXTURE WITH HYDROGEN IN A RATIO OF FROM 100 TO 400 STANDARD CUBIC FEET OF HYDROGEN PER BARREL OF HYDROCARBON IN THE CHARGE WITH A SUPPORTED PLATINUM CATALYST CONTAINING FROM 0.1 TO 5.0 PERCENT BY WEIGHT PLATINUM AT A REACTION TEMPERATURE FROM 600* TO 900*F., A PRESSURE FROM 20 TO 2,000 POUNDS PER SQUARE INCH GAUGE AND AT A CHARGE LIQUID HOURLY SPACE VELOCITY OF FROM 8 TO 12 VOLUMES PER VOLUME OF CATALYST PER HOUR.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |