US2534092A
Expired / Lapsed
US
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Method for catalytic reactions
Assignee: Standard Oil Development Co
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Filing: 1948-08-21
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Granted: 1950-12-12
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Expires: 1968-08-21
Abstract
No abstract record available.
Inventors
- 👤 Henry D Wilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:23
CPC Classifications
B; B01; B01J; B01J12/00; B01J12/007; B01J23/00; B01J23/70; B01J23/38; B01J27/00; B01J27/02; B01J27/04; B01J27/06; B01J35/00; B01J35/50; B01J35/58; B01J38/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906; Y10S585/919; Y10S585/921
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |