US2817647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal polymerization of petroleum hydrocarbon fraction
Assignee: BP PLC
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Filing: 1954-07-06
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Granted: 1957-12-24
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Habeshaw John
- 👤 Rae Robin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PRODUCTION OF HYDROCARBON POLYMERS WHICH COMPRISES SUBJECTING A CRACKED HYDROCARBON FRACTION OF PETROLEUM ORIGIN HAVING AN INITIAL BOILING POINT IN THE RANGE 15*-120*C. AND A FINAL BOILING POINT IN THE RANGE 40*C,-200*C., TO A HEAT TREATMENT IN THE LIQUID PHASE AT A TEMPERATURE IN THE RANGE 150*-300*C. AND AT A PRESSURE IN THE RANGE 50-200 LBS./SQ. IN. GAUGE FOR A PERIOD OF AT LEAST 30 MINS. AND THEREAFTER DISTILLING THE PRODUCT TO RECOVER A GASOLINE FRACTION, A DISTILLATE POLYMER FRACTION AND A RESIDUAL POLYMER FRACTION.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |