US2585199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-aminoalkylmorpholine viscosity stabilized polyamide and process for making same
Assignee: EIDP Inc
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Filing: 1950-02-03
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Granted: 1952-02-12
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Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 Watson Frederick Kingsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
LINEAR POLYCARBONAMIDES PREPARED FROM REACTANTS OF THE CLASS CONSISTING OF (1) DIAMINES AND DIBASIC CARBOXYLIC ACIDS AND THEIR AMIDEFORMING DERIVATIVES, AND (2) MONOAMINO CARBOXYLIC ACIDS AND THEIR AMIDE-FORMING DERIVATIVES, VISCOSITY-STABILIZED WITH AN N-AMINOALKYLMORPHOLINE OF THE FORMULA:
Claim 2
Dependent Claim
36 words
LINEAR POLYCARBONAMIDES PREPARED FROM REACTANTS OF THE CLASS CONSISTING OF (1) DIAMINES AND DIBASIC CARBOXYLIC ACIDS AND THEIR AMIDEFORMING DERIVATIVES, AND (2) MONOAMINO CARBOXYLIC ACIDS AND THEIR AMIDE-FORMING DERIVATIVES, VISCOSITY-STABILIZED WITH AN N-AMINOALKYLMORPHOLINE OF THE FORMULA:
References Cited (Backward Citations)
US2142007A
Cited
US2174527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |