US3301828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of aromatic diesters and 1, 4, 5, 8-tetraamino-naphthalene andpolymers thereof
Assignee: EIDP Inc
•
Filing: 1964-01-27
•
Granted: 1967-01-31
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Carl S Marvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:40
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0683; C08G73/0694
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A SOLID COMPOSITION OF MATTER COMPRISING A POLYMERIC STRUCTURE HAVING PREDOMINATELY REPEAT UNITS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
17 words
A SOLID COMPOSITION OF MATTER COMPRISING A POLYMERIC STRUCTURE HAVING PREDOMINATELY REPEAT UNITS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
22 words
A PROCESS FOR THE MANUFACTURE OF POLYMERIC MATERIALS WHICH COMPRISES MIXING 1,4,5,8-TETRAAMINO NAPHTALENE WITH AN AROMATIC DICARBOXYLIC PHENYL ESTER OF THE FORMULA
Claim 4
Dependent Claim
22 words
A PROCESS FOR THE MANUFACTURE OF POLYMERIC MATERIALS WHICH COMPRISES MIXING 1,4,5,8-TETRAAMINO NAPHTALENE WITH AN AROMATIC DICARBOXYLIC PHENYL ESTER OF THE FORMULA
References Cited (Backward Citations)
US2895948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |