Patent US1683342A successfully refreshed from Google Patents.
Patent US1968842A successfully refreshed from Google Patents.
US1968842A
Expired / Lapsed
US
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Treatment of hydrocarbons
Assignee: ATIANTIC REFINING Co
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Filing: 1930-11-03
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Granted: 1934-08-07
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Expires: 1950-11-03
Abstract
No abstract record available.
Inventors
- 👤 William M Malisoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:16
CPC Classifications
C; C10; C10G; C10G19/00; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/0434
Claims Analysis
Total Claims: 0
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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) | 1937-08-06 | 1938-02-05 | 1938-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-06 | 1942-02-05 | 1942-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-06 | 1946-02-05 | 1946-08-07 | $7700.00 | Window Closed / Lapsed |