US3597393A
Expired / Lapsed
US
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Functionally substituted highly ordered azo-aromatic polyamides
Assignee: Monsanto Co
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Filing: 1969-01-21
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Granted: 1971-08-03
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Expires: 1989-01-21
Abstract
Abstract A CLASS OF ORDERED FIBER AND FILM FORMING AROMATIC POLYAMIDES DERIVED FROM CERTAIN SUBSTUTED SYMNMETRICAL AROMATIC AZO DIAMINES HAS BEEN FOUND TO POSSESS EXCELLENT THERMAL, MECHANICAL AND ELECTRICAL PROPERTIES USEFUL IN THE MANUFACTURE OF FIBERS, FILMS AND OTHER SHAPED ARTICLES.
Inventors
- 👤 Hartwig C Bach
- 👤 Helmuth E Hinderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:45
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |