US3115474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polyalkylenamides and polymers thereof
Assignee: 3M Co
•
Filing: 1959-08-07
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Granted: 1963-12-24
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Expires: 1979-08-07
Abstract
No abstract record available.
Inventors
- 👤 George H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:03
CPC Classifications
C; C07; C07D; C07D203/00; C07D203/04; C07D203/06; C07D203/16; C07D203/18; C08; C08G; C08G73/00; C08G73/02; C08G73/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A SOLID TRANSPARENT AND AMORPHOUS HOMOPOLYMER OF AN AROMATIC N-1,2-ALKYLENAMIDE HAVING AT LEAST TWO META-SUBSTITUTED N-1,2-ALKYLENECARBOXAMIDE GROUPS.
Claim 2
Dependent Claim
17 words
A SOLID TRANSPARENT AND AMORPHOUS HOMOPOLYMER OF AN AROMATIC N-1,2-ALKYLENAMIDE HAVING AT LEAST TWO META-SUBSTITUTED N-1,2-ALKYLENECARBOXAMIDE GROUPS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |