Patent US2517944A successfully refreshed from Google Patents.
US2517944A
Expired / Lapsed
US
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Polymeric boronamides
Assignee: EIDP Inc
•
Filing: 1946-12-16
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Granted: 1950-08-08
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Expires: 1966-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert W Upson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:16
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A FIBER COMPRISING POLYMERIC N,N''-HEXAMETHYLENEBENZENEBORONAMIDE.
References Cited (Backward Citations)
US2284896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |