US3248186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow characteristics of waxy petroleum residuum
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1962-09-12
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Granted: 1966-04-26
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Brownawell Darrell
- 👤 Harold N Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/22; C07; C07C; C07C45/00; C07C45/45; C07C45/46; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/108; C10M2209/00; C10M2209/02; C10M2209/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PETROLEUM RESIDUUM OIL COMPOSITION HAVING IMPROVED CHARACTERISTICS, WHICH COMPRISES ESSENTIALLY A HIGH WAX CONTENT PETROLEUM RESIDUUM BOILING ABOVE ABOUT 650*F. AND HAVING A FLOW POINT AND A POUR POINT ABOVE 75*F., IMPROVED WITH RESPECT TO ITS FLOW CHARACTERISTICS BY INCORPORATING AND BLENDING THEREWITH AN AMOUNT OF ABOUT 0.1 TO 1.0 WT. PERCENT OF C20 TO C22 ACYL POLYSTYRENE HAVING THE ACYL GROUP.
Claim 2
Dependent Claim
63 words
A PETROLEUM RESIDUUM OIL COMPOSITION HAVING IMPROVED CHARACTERISTICS, WHICH COMPRISES ESSENTIALLY A HIGH WAX CONTENT PETROLEUM RESIDUUM BOILING ABOVE ABOUT 650*F. AND HAVING A FLOW POINT AND A POUR POINT ABOVE 75*F., IMPROVED WITH RESPECT TO ITS FLOW CHARACTERISTICS BY INCORPORATING AND BLENDING THEREWITH AN AMOUNT OF ABOUT 0.1 TO 1.0 WT. PERCENT OF C20 TO C22 ACYL POLYSTYRENE HAVING THE ACYL GROUP.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |