US3538165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous oxidation of aromatic compounds
Assignee: Universal Oil Products Co
•
Filing: 1968-07-01
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Granted: 1970-11-03
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Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Samuel J Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:53
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; C07C29/00; C07C29/09; C07C29/10; C07C29/48; C07C29/50; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1636855A
Cited
US2444816A
Cited
US2545870A
Cited
US2497889A
Cited
US2561350A
Cited
US2686813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |