US2846490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1953-12-17
•
Granted: 1958-08-05
•
Expires: 1973-12-17
Abstract
No abstract record available.
Inventors
- 👤 Donald R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:36
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/48; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/16; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR POLYMERIZING ALKYNES CORRESPONDING TO THE FORMULA HC$CR, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, ALKENYL, CYCLOALKYL, ARYL, ALKARYL AND ARALKYL, AND WHEN R IS A HYDROCARBON IT CONTAINS 1 TO 8 CARBON ATOMS, TO PRODUCE A LIQUYID AROMATIC HYDROCARBON, THE SAID PROCESS COMPRISING CONTACTING SAID ALKYNES AT A TEMPERATURE IN THE RANGE OF 0* TO 350*F. WITH A CATALYST COMPRISING COBALT OXIDE.
Claim 2
Dependent Claim
69 words
A PROCESS FOR POLYMERIZING ALKYNES CORRESPONDING TO THE FORMULA HC$CR, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, ALKENYL, CYCLOALKYL, ARYL, ALKARYL AND ARALKYL, AND WHEN R IS A HYDROCARBON IT CONTAINS 1 TO 8 CARBON ATOMS, TO PRODUCE A LIQUYID AROMATIC HYDROCARBON, THE SAID PROCESS COMPRISING CONTACTING SAID ALKYNES AT A TEMPERATURE IN THE RANGE OF 0* TO 350*F. WITH A CATALYST COMPRISING COBALT OXIDE.
References Cited (Backward Citations)
US1843965A
Cited
US1993503A
Cited
AU1445633A
Cited
FR797935A
Cited
US2179379A
Cited
US2284468A
Cited
US2332276A
Cited
US2381198A
Cited
US2629752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |