US2768119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pitches from petroleum and process for producing same
Assignee: Phillips Petroleum Co
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Filing: 1952-12-31
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Granted: 1956-10-23
•
Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Martin E Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:17
CPC Classifications
C; C10; C10G; C10G9/00; C10C; C10C3/00; C10C3/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
THE PRODUCTION OF A PETROLEUM PITCH HAVING A SOFTENING POINT IN THE APPROXIMATE RANGE 185* F.-330* F., WHICH COMPRISES CRACKING AN ESSENTIALLY AROMATIC OIL AT A TEMPERATURE IN THE RANGE 900* F. TO 1050* F., UNDER A PRESSURE IN THE RANGE 10-1000 P.S.I.G. FOR A TIME IN THE RANGE 30 TO 300 SECONDS SUFFICIENT TO PRODUCE A FUEL OIL SUITABLE AS A FEED TO A VACUUM REDUCTION, RECOVERING SAID FUEL OIL AND DISTILLING SAME AT A PRESSURE OF THE ORDER OF 1 MM. MERCURY AT A TEMPERATURE IN THE RANGE 440650* F. SO AS TO OBTAIN A PITCH HAVING A NORMAL PENTANE SOLUBILITY NOT GREATER THAN 37.5 PERCENT.
Claim 2
Dependent Claim
108 words
THE PRODUCTION OF A PETROLEUM PITCH HAVING A SOFTENING POINT IN THE APPROXIMATE RANGE 185* F.-330* F., WHICH COMPRISES CRACKING AN ESSENTIALLY AROMATIC OIL AT A TEMPERATURE IN THE RANGE 900* F. TO 1050* F., UNDER A PRESSURE IN THE RANGE 10-1000 P.S.I.G. FOR A TIME IN THE RANGE 30 TO 300 SECONDS SUFFICIENT TO PRODUCE A FUEL OIL SUITABLE AS A FEED TO A VACUUM REDUCTION, RECOVERING SAID FUEL OIL AND DISTILLING SAME AT A PRESSURE OF THE ORDER OF 1 MM. MERCURY AT A TEMPERATURE IN THE RANGE 440650* F. SO AS TO OBTAIN A PITCH HAVING A NORMAL PENTANE SOLUBILITY NOT GREATER THAN 37.5 PERCENT.
Claim 3
Dependent Claim
65 words
AN NON-OXIDIZED COAL-TAR-PITCH-LIKE PITCH OBTAINED SOLELY FROM PERTROLEUM OILS BY TREATMENT THEREOF, SAID PITCH HAVING A SOFTENING POINT IN THE APPROXIMATE RANGE 185* F.-330* F., A SPECIFIC GRAVITY OF AT LEAST APPROXIMATELY 1.11, A NORMAL PENTANE SOLUBILITY IN THE RANGE OF ABOUT 5.5 TO 29 PERCENT, AND A PENERATION AT 115* F. AND AT 150* F. (5 SECONDS WITH 100 GRAMS STANDARD NEEDLE) OF ZERO.
Claim 4
Dependent Claim
65 words
AN NON-OXIDIZED COAL-TAR-PITCH-LIKE PITCH OBTAINED SOLELY FROM PERTROLEUM OILS BY TREATMENT THEREOF, SAID PITCH HAVING A SOFTENING POINT IN THE APPROXIMATE RANGE 185* F.-330* F., A SPECIFIC GRAVITY OF AT LEAST APPROXIMATELY 1.11, A NORMAL PENTANE SOLUBILITY IN THE RANGE OF ABOUT 5.5 TO 29 PERCENT, AND A PENERATION AT 115* F. AND AT 150* F. (5 SECONDS WITH 100 GRAMS STANDARD NEEDLE) OF ZERO.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |