US2953548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides from branched chain diacids
Assignee: Millennium Petrochemicals Inc
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Filing: 1955-07-22
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Granted: 1960-09-20
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Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Schott Stuart
- 👤 Greenberg Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A SYNTHETIC LINEAT CONDENSATION PRODUCT, CAPABLE OF BEING DRAWN INTO FIBERS, WHICH IS A POLYAMIDE OF (1) A DIAMINE FROM THE GROUP CONSISTING OF SATURATED PRIMARY ALIPHATIC HYDROCARBON DIAMINES OF AT LEAST 4 CARBONS ATOMS AND SATURATED SECONDARY ALIPHATIC HYDROCARBON DIAMINES OF AT LEAST 4 CARBON ATOMS AND (2) A DICARBOXYLIC ACID REACTANT FROM THE GROUP CONSISTING OF (A) AETHYLUSBERIC ACID AND (!) A-ETHYLUSBERIC ACID IN MIXTURE WITH AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF A,A''-DIETHYLAPIDIC ACID AND SATURATED ALIPHATIC HYDROCARBON STRAIGHT CHAIN DICARBOXYLIC ACIDS AND IN WHICH MIXTURE THE A-ETHYLSUBERIC ACID IS IN MAJOR AMOUNT BY WEIGHT.
Claim 2
Dependent Claim
100 words
A SYNTHETIC LINEAT CONDENSATION PRODUCT, CAPABLE OF BEING DRAWN INTO FIBERS, WHICH IS A POLYAMIDE OF (1) A DIAMINE FROM THE GROUP CONSISTING OF SATURATED PRIMARY ALIPHATIC HYDROCARBON DIAMINES OF AT LEAST 4 CARBONS ATOMS AND SATURATED SECONDARY ALIPHATIC HYDROCARBON DIAMINES OF AT LEAST 4 CARBON ATOMS AND (2) A DICARBOXYLIC ACID REACTANT FROM THE GROUP CONSISTING OF (A) AETHYLUSBERIC ACID AND (!) A-ETHYLUSBERIC ACID IN MIXTURE WITH AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF A,A''-DIETHYLAPIDIC ACID AND SATURATED ALIPHATIC HYDROCARBON STRAIGHT CHAIN DICARBOXYLIC ACIDS AND IN WHICH MIXTURE THE A-ETHYLSUBERIC ACID IS IN MAJOR AMOUNT BY WEIGHT.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |