US2734046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam or
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:26
CPC Classifications
C; C08; C08F; C08F240/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A PROCESS FOR THE PREPARATION OF IMPROVED PETROLEUM RESINS THE COMBINATION WHICH COMPRISES ISOLATING A STEAMED CRACKED HYDROCARBON PETROLEUM FRACTION BOILING BETWEEN ABOUT MORE THAN 20* C. TO LESS THAN 140* C., SAID FRACTION BEING SUBSTANTIALLY BELOW C9, HEATING THE STEAM CRACKED FRACTION TO A TEMPERATURE SUFFICIENT TO
Claim 2
Dependent Claim
49 words
IN A PROCESS FOR THE PREPARATION OF IMPROVED PETROLEUM RESINS THE COMBINATION WHICH COMPRISES ISOLATING A STEAMED CRACKED HYDROCARBON PETROLEUM FRACTION BOILING BETWEEN ABOUT MORE THAN 20* C. TO LESS THAN 140* C., SAID FRACTION BEING SUBSTANTIALLY BELOW C9, HEATING THE STEAM CRACKED FRACTION TO A TEMPERATURE SUFFICIENT TO
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |