US3012953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of hydrocarbons
Assignee: Cities Service Research and Development Co
•
Filing: 1958-08-29
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Granted: 1961-12-12
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Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Bertrand W Greenwald
- 👤 Milsom Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A PROCESS FOR THE ISOMERIZATION OF NORMAL SATURATED C4-C7 HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING A VAPOROUS FEED OF NORMAL C4-C7 HYDROCARBONS IN A REACTION ZONE, MAINTAINED AT A TEMPERATURE OF BETWEEN 600-700*F., WITH AN ISOMERIZATION CATALYST OF THE PLATINUM AND MOLYBDENUM TYPES WHICH HAS BEEN SUBJECTED TO SUFFICIENT GAMMA RADIATION TO PROVIDE THE CATALYST WITH A TOTAL DOSAGE OF FROM 1.7X10**7 TO 1.3X10**8 ROENTGENS.
Claim 2
Dependent Claim
66 words
IN A PROCESS FOR THE ISOMERIZATION OF NORMAL SATURATED C4-C7 HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING A VAPOROUS FEED OF NORMAL C4-C7 HYDROCARBONS IN A REACTION ZONE, MAINTAINED AT A TEMPERATURE OF BETWEEN 600-700*F., WITH AN ISOMERIZATION CATALYST OF THE PLATINUM AND MOLYBDENUM TYPES WHICH HAS BEEN SUBJECTED TO SUFFICIENT GAMMA RADIATION TO PROVIDE THE CATALYST WITH A TOTAL DOSAGE OF FROM 1.7X10**7 TO 1.3X10**8 ROENTGENS.
References Cited (Backward Citations)
US2904483A
Cited
US2905606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |