US2436041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion of hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1943-11-29
•
Granted: 1948-02-17
•
Expires: 1963-11-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Gerhold
- 👤 John E Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:16
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G11/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1666273A
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US2073638A
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US2378342A
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US2382382A
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US2353731A
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US2414883A
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US2374151A
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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) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |