US2948698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide molding compositions
Assignee: EIDP Inc
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Filing: 1957-07-31
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Granted: 1960-08-09
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Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 Cocci Alfred Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
NYLON MOLDING GRANULES PARTICULARLY SUITABLE FOR INJECTION MOLDING, COMPRISING GRANULES OF A MACROMOLECULAR SUPERPOLYAMIDE HAVING AN INTRINSIC VISCOSITY IN MCRESOL BETWEEN 0.4 AND 1.8, SAID SUPERPOLYAMIDE BEING ONE WHICH HAS CARBOXAMIDE LINKAGES FORMING AN INTEGRAL PART OF THE POLYMER CHAINS AND WHICH, UPON HYDROLYSIS, YIELDS MONOMERIC COMPOUNDS SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF (1) MIXTURES OF DICARBOXYLIC ACIDS AND DIAMINES AND (2) W-AMINOMONOCARBOXYLIC ACIDS, SAID GRANULES HAVING A COATING OF FROM 0.005% TO 0.10% BY WEIGHT OF AN ALIPHATIC CARBOXYLIC AMIDE SELECTED FROM THE GROUP CONSISTING OF THE MONOAMIDES AND THE ETHYLENE-BIS-DIAMIDES OF THE ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING FROM 12 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
109 words
NYLON MOLDING GRANULES PARTICULARLY SUITABLE FOR INJECTION MOLDING, COMPRISING GRANULES OF A MACROMOLECULAR SUPERPOLYAMIDE HAVING AN INTRINSIC VISCOSITY IN MCRESOL BETWEEN 0.4 AND 1.8, SAID SUPERPOLYAMIDE BEING ONE WHICH HAS CARBOXAMIDE LINKAGES FORMING AN INTEGRAL PART OF THE POLYMER CHAINS AND WHICH, UPON HYDROLYSIS, YIELDS MONOMERIC COMPOUNDS SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF (1) MIXTURES OF DICARBOXYLIC ACIDS AND DIAMINES AND (2) W-AMINOMONOCARBOXYLIC ACIDS, SAID GRANULES HAVING A COATING OF FROM 0.005% TO 0.10% BY WEIGHT OF AN ALIPHATIC CARBOXYLIC AMIDE SELECTED FROM THE GROUP CONSISTING OF THE MONOAMIDES AND THE ETHYLENE-BIS-DIAMIDES OF THE ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING FROM 12 TO 20 CARBON ATOMS.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |