US2987467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of sulfur and metals from heavy oils by hydro-catalytic treatment
Assignee: Hydrocarbon Research Inc
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Filing: 1958-05-26
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Granted: 1961-06-06
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Percival C Keith
- 👤 Edwin T Layng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; C; C10; C10G; C10G47/00; C10G47/24; C10G47/26; C10G65/00; C10G65/02; C10G65/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR REFINING A SULFUR-CONTAINING HEAVY OIL HAVING AT LEAST 10% BY VOLUME OF HYDROCARBONS BOILING ABOVE 900*F., WHICH COMPRISES CRACKING SAID OIL WHILE SUBSTANTIALLY IN THE LIQUID PHASE TO CONVERT AT LEAST 25% BY VOLUME OF SAID HYDROCARBONS BOILING ABOVE 900*F. TO HYDROCARBONS BOILING BELOW 900*F., AND THEREAFTER
Claim 2
Dependent Claim
50 words
A PROCESS FOR REFINING A SULFUR-CONTAINING HEAVY OIL HAVING AT LEAST 10% BY VOLUME OF HYDROCARBONS BOILING ABOVE 900*F., WHICH COMPRISES CRACKING SAID OIL WHILE SUBSTANTIALLY IN THE LIQUID PHASE TO CONVERT AT LEAST 25% BY VOLUME OF SAID HYDROCARBONS BOILING ABOVE 900*F. TO HYDROCARBONS BOILING BELOW 900*F., AND THEREAFTER
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |