US2775575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum resins of improved color from 18 deg.-85 deg. c. stream
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-05-20
•
Granted: 1956-12-25
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Expires: 1973-05-20
Abstract
No abstract record available.
Inventors
- 👤 Glen P Hamner
- 👤 Thomas G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS FOR THE PREPARATION OF IMPROVED PETROLEUM RESINS THE COMBINATION WHICH COMPRISES ISOLATING A STEAM CRACKED HYDROCARBON PETROLEUM FRACTION BOILING BETWEEN ABOUT MORE THAN 18* C. TO LESS THAN 85* C., HEATING THE STREAM CRACKED FRACTION TO A TEMPERATURE SUFFICIENT TO DIMERIZE SUBSTANTIALLY ALL CYCLODIENES, STRIPPING THE RESULTING ADMIXTURE TO A TEMPERATURE SUFFICIENT TO SEPARATE AN OVERHEAD PRODUCT FROM THE DIMERIZED CYCLODIENES, RECOVERING AS THE OVERHEAD PRODUCT A STREAM BOILING BETWEEN ABOUT MORE THAN 18* C. TO LESS THAN 85* C. AND HAVING THE FOLLOWING COMPOSITION:
Claim 2
Dependent Claim
88 words
IN A PROCESS FOR THE PREPARATION OF IMPROVED PETROLEUM RESINS THE COMBINATION WHICH COMPRISES ISOLATING A STEAM CRACKED HYDROCARBON PETROLEUM FRACTION BOILING BETWEEN ABOUT MORE THAN 18* C. TO LESS THAN 85* C., HEATING THE STREAM CRACKED FRACTION TO A TEMPERATURE SUFFICIENT TO DIMERIZE SUBSTANTIALLY ALL CYCLODIENES, STRIPPING THE RESULTING ADMIXTURE TO A TEMPERATURE SUFFICIENT TO SEPARATE AN OVERHEAD PRODUCT FROM THE DIMERIZED CYCLODIENES, RECOVERING AS THE OVERHEAD PRODUCT A STREAM BOILING BETWEEN ABOUT MORE THAN 18* C. TO LESS THAN 85* C. AND HAVING THE FOLLOWING COMPOSITION:
References Cited (Backward Citations)
US2734046A
Cited
US1836629A
Cited
US1982707A
Cited
US1982708A
Cited
US2234660A
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US2349418A
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US2500755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |