US2435631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autocondensation product of an acid amide
Assignee: Standard Oil Development Co
•
Filing: 1942-09-26
•
Granted: 1948-02-10
•
Expires: 1962-09-26
Abstract
No abstract record available.
Inventors
- 👤 Lieber Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1037158A
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US1937463A
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US2174527A
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US2245129A
Cited
US2104796A
Cited
US2216812A
Cited
US2320644A
Cited
US2300126A
Cited
US2291396A
Cited
US2312966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |