US2474014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion system
Assignee: Standard Oil Co
•
Filing: 1943-01-30
•
Granted: 1949-06-21
•
Expires: 1963-01-30
Abstract
No abstract record available.
Inventors
- 👤 James E Seebold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:51
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0476; B01J8/0488; B01J2219/00; B01J2219/18; B01J2219/182; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265641A
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US2321294A
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US2221824A
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US2330767A
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US2270715A
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US2328234A
Cited
US2357365A
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US2346750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |