US2882185A
Expired / Lapsed
US
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Water soluble basic polyamides and their alkylation products
Assignee: Onyx Oil and Chemical Co
•
Filing: 1956-04-13
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Granted: 1959-04-14
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Emery I Valko
- 👤 Giuliana C Tesoro
- 👤 Edward D Szubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:41
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59; C; C08; C08G; C08G69/00; C08G69/48; C08G73/00; C08G73/06; C08G73/0605; C08G73/0616; D06M15/564; D06M15/579; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17; Y10S260/18
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |