US3249591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homopolyamide of recurring bis (paraaminocyclohexyl) methane-azelamide units
Assignee: EIDP Inc
•
Filing: 1962-06-01
•
Granted: 1966-05-03
•
Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Gadecki Filon Alexander
- 👤 Speck Stanley Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; D; D01; D01F; D01F6/00; D01F6/58; D01F6/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A NOVEL FILAMENT OF POLY(BIS(PARA-AMINOCYCLOHEXYL)METHANE-AZELAMIDE), WHEREIN AT LEAST 55% OF THE PARA-AMINOCYCLOHEXYL METHANE UNITS ARE OF THE TRANSTRANS ISOMR, THE FILAMENT HAVING AN X-RAY OPTICAL FACTOR OF AT LEAST ABOUT 0.040 AND A NUCLEAR MAGNETIC RESONANCE "LOOSENING" FACTOR OF LESS THAN ABOUT 2.5.
Claim 2
Dependent Claim
43 words
A NOVEL FILAMENT OF POLY(BIS(PARA-AMINOCYCLOHEXYL)METHANE-AZELAMIDE), WHEREIN AT LEAST 55% OF THE PARA-AMINOCYCLOHEXYL METHANE UNITS ARE OF THE TRANSTRANS ISOMR, THE FILAMENT HAVING AN X-RAY OPTICAL FACTOR OF AT LEAST ABOUT 0.040 AND A NUCLEAR MAGNETIC RESONANCE "LOOSENING" FACTOR OF LESS THAN ABOUT 2.5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |