Patent US3158193A successfully refreshed from Google Patents.
Patent US3156750A successfully refreshed from Google Patents.
US3156750A
Expired / Lapsed
US
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Process of producing polycaprolactam monofilaments
Assignee: EIDP Inc
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Filing: 1962-07-31
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Granted: 1964-11-10
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Cuculo John Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:42
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01F1/00; D01F1/02; D01F1/04; D01F1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PRODUCING A MONOFILAMENT FISH LINE, 3-30 MILS IN DIAMETER, OF POLYCAPROLACTAM COMPRISING EXTRUDING A DRIED, FLAKED, POLYCAPROLACTAM CONTAINING 315% BY WEIGHT OF A PLASTICIZER AT A TEMPERATURE OF ABOUT 250*C.; QUENCHING THE EXTRUDATE IN WATER AT A TEMPERATURE OF ABOUT 5*-25*C.; DRAWING SAID EXTRUDATE AT A RATIO OF 5.2/1.0 AT A TEMPERATURE OF 150*-165*C. IN AN OIL WHICH IS SUBSTANTIALLY UNREACTIVE TOWARDS SAID POLYCAPROLACTAM.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PRODUCING A MONOFILAMENT FISH LINE, 3-30 MILS IN DIAMETER, OF POLYCAPROLACTAM COMPRISING EXTRUDING A DRIED, FLAKED, POLYCAPROLACTAM CONTAINING 315% BY WEIGHT OF A PLASTICIZER AT A TEMPERATURE OF ABOUT 250*C.; QUENCHING THE EXTRUDATE IN WATER AT A TEMPERATURE OF ABOUT 5*-25*C.; DRAWING SAID EXTRUDATE AT A RATIO OF 5.2/1.0 AT A TEMPERATURE OF 150*-165*C. IN AN OIL WHICH IS SUBSTANTIALLY UNREACTIVE TOWARDS SAID POLYCAPROLACTAM.
References Cited (Backward Citations)
US2733122A
Cited
GB763746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |