Patent US1558530A successfully refreshed from Google Patents.
US2902475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyamide resins
Assignee: General Electric Co
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Filing: 1956-04-13
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Granted: 1959-09-01
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Burkhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THE METHOD OF FORMING A POLYMERIC POLYAMIDE HAVING FIBER-FORMING CHARACTERISTICS AND ORIENTABILITY BY COLD DRAWING, SAID POLYAMIDE HAVING A MOLECULAR WEIGHT OF AT LEAST 3000 AND BEING COMPOSED OF THE RECURRING STRUCTURAL UNIT SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Independent Claim
39 words
THE METHOD OF FORMING A POLYMERIC POLYAMIDE HAVING FIBER-FORMING CHARACTERISTICS AND ORIENTABILITY BY COLD DRAWING, SAID POLYAMIDE HAVING A MOLECULAR WEIGHT OF AT LEAST 3000 AND BEING COMPOSED OF THE RECURRING STRUCTURAL UNIT SELECTED FROM THE CLASS CONSISTING OF
References Cited (Backward Citations)
US2272466A
Cited
US2252555A
Cited
FR956545A
Cited
US2724723A
Cited
US2742496A
Cited
US2715620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |