US2477306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of an alkyl phenol with an aromatic dibasic acylating agent
Assignee: Standard Oil Development Co
•
Filing: 1944-10-24
•
Granted: 1949-07-26
•
Expires: 1964-10-24
Abstract
No abstract record available.
Inventors
- 👤 Lieber Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:18
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/82; C07C49/825; C07C49/83; C10; C10M; C10M1/00; C10M1/08; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1756819A
Cited
US2202765A
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US2126794A
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US2147547A
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US2288319A
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US2284156A
Cited
GB518057A
Cited
US2268410A
Cited
US2304729A
Cited
US2366735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |