US3355378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amylose in the reduction of pour point
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-07-08
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Granted: 1967-11-28
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Expires: 1985-07-08
Abstract
No abstract record available.
Inventors
- 👤 Cheema Inder
- 👤 Harold N Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C08; C08L; C08L3/00; C08L3/12; C10G29/00; C10G29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN IMPROVED PROCESS FOR LOWERING THE POUR POINT OF A WAXY OIL FRACTION, THE SAID WAXY OIL FRACTION POURING AT A TEMPERATURE OF 60 TO 120*F. AND CONTAINING WAXY LONG CHAIN NORMAL PARAFFINS WHICH COMPRISES CONTACTING THE SAID WAXY OIL FRACTION WITH 10-70 WT. PERCENT OF AMYLOSE WHEREBY A COMPLEX FORMS BETWEEN SAID AMYLOSE AND SAID LONG CHAIN NORMAL PARAFFINS, THE SAID CONTACTING TAKING PLACE AT A TEMPERATURE OF 0 TO 300*F. AND A PRESSURE OF 0 TO 200 P.S.I.G. FOR A PERIOD OF 5 TO 180 MINUTES, FILTERING THE SAID WAXY OIL WHEREBY THE SAID COMPLEX IS REMOVED AND A DEWAXED OIL IS OBTAINED WHICH POURS AT A TEMPERATURE OF -50 TO 10*F.
Claim 2
Dependent Claim
114 words
AN IMPROVED PROCESS FOR LOWERING THE POUR POINT OF A WAXY OIL FRACTION, THE SAID WAXY OIL FRACTION POURING AT A TEMPERATURE OF 60 TO 120*F. AND CONTAINING WAXY LONG CHAIN NORMAL PARAFFINS WHICH COMPRISES CONTACTING THE SAID WAXY OIL FRACTION WITH 10-70 WT. PERCENT OF AMYLOSE WHEREBY A COMPLEX FORMS BETWEEN SAID AMYLOSE AND SAID LONG CHAIN NORMAL PARAFFINS, THE SAID CONTACTING TAKING PLACE AT A TEMPERATURE OF 0 TO 300*F. AND A PRESSURE OF 0 TO 200 P.S.I.G. FOR A PERIOD OF 5 TO 180 MINUTES, FILTERING THE SAID WAXY OIL WHEREBY THE SAID COMPLEX IS REMOVED AND A DEWAXED OIL IS OBTAINED WHICH POURS AT A TEMPERATURE OF -50 TO 10*F.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |