US3210432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal hydrogenolysis of polyphenyls
Assignee: ExxonMobil Oil Corp
•
Filing: 1961-11-06
•
Granted: 1965-10-05
•
Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:06
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A NON-CATALYTIC PROCESS FOR CONVERTING POLYPHENYLS INTO BENZENE, WHICH COMPRISES CHARGING SAID POLYPHENYL AND HYDROGEN TO A PRESSURIZED REACTION ZONE, AT A TEMPERATURE BETWEEN ABOUT 1000*F. AND ABOUT 1400*F., AT A PRESSURE OF BETWEEN ABOUT 100 P.S.I.G. AND ABOUT 2000 P.S.I.G., AT A RESIDENCE TIME OF BETWEEN ABOUT 5 SECONDS AND ABOUT 50 SECONDS, AND USING A HYDROGEN TO HYDROCARBON MOLAR RATIO OF BETWEEN ABOUT 2 AND ABOUT 30.
Claim 2
Dependent Claim
69 words
A NON-CATALYTIC PROCESS FOR CONVERTING POLYPHENYLS INTO BENZENE, WHICH COMPRISES CHARGING SAID POLYPHENYL AND HYDROGEN TO A PRESSURIZED REACTION ZONE, AT A TEMPERATURE BETWEEN ABOUT 1000*F. AND ABOUT 1400*F., AT A PRESSURE OF BETWEEN ABOUT 100 P.S.I.G. AND ABOUT 2000 P.S.I.G., AT A RESIDENCE TIME OF BETWEEN ABOUT 5 SECONDS AND ABOUT 50 SECONDS, AND USING A HYDROGEN TO HYDROCARBON MOLAR RATIO OF BETWEEN ABOUT 2 AND ABOUT 30.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |