US2396331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of naphthene hydrocarbons
Assignee: Standard Oil Co
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Filing: 1942-05-30
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Granted: 1946-03-12
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Expires: 1962-05-30
Abstract
No abstract record available.
Inventors
- 👤 Robert F Marschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:00
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/14; C10G59/00; C10G59/06; C10L; C10L1/00; C10L1/04; C10L1/06
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) | 1949-03-11 | 1949-09-10 | 1950-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-11 | 1953-09-10 | 1954-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-11 | 1957-09-10 | 1958-03-12 | $7700.00 | Window Closed / Lapsed |