US2489347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for oxidation of aromatic hydrocarbons
Assignee: STANARD OIL DEV Co
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Filing: 1945-08-11
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Granted: 1949-11-29
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Expires: 1965-08-11
Abstract
No abstract record available.
Inventors
- 👤 Walter F Rollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:03
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/313; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J8/00; B01J8/18; B01J8/1836; B01J8/24; B01J8/26
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) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |