US3296324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrocyclodimerization of low molecular weight paraffins
Assignee: Chevron USA Inc
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Filing: 1966-04-05
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Granted: 1967-01-03
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Expires: 1986-04-05
Abstract
No abstract record available.
Inventors
- 👤 Sigmund M Csicsery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:00
CPC Classifications
C; C07; C07C; C07C2/00; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR CONVERTING LOW MOLEUCLAR WEIGHT PARAFFINS TO HIGHER MOLEUCLAR WEIGHT AROMATIC HYDROCARBONS AND HYDROGEN, WHICH COMPRISES CONTACTING IN A REACTION ZONE AT LEAST ONE PARAFFIN HYDROCARBON CONTAINING FROM 3 TO 5 CARBON ATOMS PER MOLECULE WITH A CATALYST COMPRISING AT LEAST ONE GROUP VIII METAL DISPOSED ON A SOLID, ALUMINA-CONTAINING SUPPORT, SAID ALUMINA SUPPORT BEING OF SUFFICIENT ACIDITY THAT THE ACIDITY INDEX OF THE CATALYST IS BETWEEN 0 AND 9, AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 800 TO 1200*F., AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 2 TO 1500 P.S.I.A., SAID CONTACTING BEING DONE SUCH THAT THE MOLE RATIO OF HYDROGEN ADDED TO SAID REACTOR (OTHER THAN THAT PRODUCED IN THE REACTION) TO SAID PARAFFIN HYDROCARBON IS LESS THAN 1.0.
Claim 2
Dependent Claim
128 words
A PROCESS FOR CONVERTING LOW MOLEUCLAR WEIGHT PARAFFINS TO HIGHER MOLEUCLAR WEIGHT AROMATIC HYDROCARBONS AND HYDROGEN, WHICH COMPRISES CONTACTING IN A REACTION ZONE AT LEAST ONE PARAFFIN HYDROCARBON CONTAINING FROM 3 TO 5 CARBON ATOMS PER MOLECULE WITH A CATALYST COMPRISING AT LEAST ONE GROUP VIII METAL DISPOSED ON A SOLID, ALUMINA-CONTAINING SUPPORT, SAID ALUMINA SUPPORT BEING OF SUFFICIENT ACIDITY THAT THE ACIDITY INDEX OF THE CATALYST IS BETWEEN 0 AND 9, AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 800 TO 1200*F., AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 2 TO 1500 P.S.I.A., SAID CONTACTING BEING DONE SUCH THAT THE MOLE RATIO OF HYDROGEN ADDED TO SAID REACTOR (OTHER THAN THAT PRODUCED IN THE REACTION) TO SAID PARAFFIN HYDROCARBON IS LESS THAN 1.0.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |