US2542970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of cracked naphthas by selective hydrogenation
Assignee: Standard Oil Development Co
•
Filing: 1946-06-15
•
Granted: 1951-02-27
•
Expires: 1966-06-15
Abstract
No abstract record available.
Inventors
- 👤 Minor C K Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/32; C10G45/34; C10G45/40; C10G2400/00; C10G2400/02; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901; Y10S585/906
Claims Analysis
Total Claims: 0
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US2413312A
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US2440673A
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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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |