Patent US3673080A successfully refreshed from Google Patents.
US3673080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of petroleum coke
Assignee: Texaco Inc
•
Filing: 1969-06-09
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Granted: 1972-06-27
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Expires: 1989-06-09
Abstract
Abstract Clusters of petroleum coke pellets are made by the steps of dispersing particulate carbon seed particles in a high boiling petroleum oil, heating the seeded oil in a coking heater under conditions of controlled cracking, and introducing the effluent from the heater into a coke drum where the seed particles serve as nucleating agents in the formation of clusters of petroleum coke pellets.
Inventors
- 👤 Warren G Schlinger
- 👤 Harold C Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:14
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04; C10B57/045; C10B55/00; C10B55/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
The process of claim 1 wherein the petroleum oil charged into the distillation zone contains at least about 0.003 pounds of catalyst fines comprising aluminum oxide and silicon dioxide per gallon of petroleum oil.
Claim 2
Dependent Claim
36 words
The process of claim 1 wherein said liquid bottoms product from the distillation zone is a hydrocarbon oil fraction from vacuum distillation having a 10 percent point at 10 mm Hg of at least 800* F.
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US3022246A
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |