Patent US3472759A successfully refreshed from Google Patents.
US3472759A
Expired / Lapsed
US
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Process for removal of sulfur and metals from petroleum materials
Assignee: Atlantic Richfield Co
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Filing: 1967-04-25
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Granted: 1969-10-14
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Expires: 1987-04-25
Abstract
No abstract record available.
Inventors
- 👤 George P Masologites
- 👤 Harry E Jacobs
- 👤 Paul J White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:49
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/10; C10G65/12
Claims Analysis
Total Claims: 0
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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) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |