US2687401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers and copolymers of nu-pyridyl amide of an alkene-1, 2-dioic acid
Assignee: Beazer East Inc
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Filing: 1951-08-31
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Granted: 1954-08-24
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Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:55
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F22/00; C08F22/36; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A POLYMERIC COMPOSITION HAVING IN THE POLYMER MOLECULE A PLURALITY OF REPEATING UNITS HAVING THE FORMULA SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Dependent Claim
22 words
A POLYMERIC COMPOSITION HAVING IN THE POLYMER MOLECULE A PLURALITY OF REPEATING UNITS HAVING THE FORMULA SELECTED FROM THE CLASS CONSISTING OF
References Cited (Backward Citations)
US2508860A
Cited
US2531410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |