US3200183A
Expired / Lapsed
US
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Assignee: Imperial Chemical Industries Ltd
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Filing: 1962-08-23
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Granted: 1965-08-10
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Markey Peter
- 👤 Roberts John Francis Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/224; D01; D01F; D01F6/00; D01F6/58; D01F6/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A DRAWING PROCESS FOR MELT SPUN FILAMENTS MADE FROM A POLYMER OF METAXYLYLENE DIAMINE AND ADIPIC ACID WHERE THE MELT SPUN FILAMENTS ARE DRAWN WHILE PASSING THROUGH A HEATING ZONE IN WHICH THE FILAMENTS ARE DRAWN TO AT LEAST 3 TIMES THEIR ORIGINAL LENGTH, CHARACTERIZED IN THAT THE TEMPERATURE OF THE HEATING ZONE (TP) IS WITHIN THE RANGE OF 2*C. LOWER THAN TO 5*C. ABOVE THAT CALCULATED FROM THE FOLLOWING EQUATION:
Claim 2
Dependent Claim
71 words
A DRAWING PROCESS FOR MELT SPUN FILAMENTS MADE FROM A POLYMER OF METAXYLYLENE DIAMINE AND ADIPIC ACID WHERE THE MELT SPUN FILAMENTS ARE DRAWN WHILE PASSING THROUGH A HEATING ZONE IN WHICH THE FILAMENTS ARE DRAWN TO AT LEAST 3 TIMES THEIR ORIGINAL LENGTH, CHARACTERIZED IN THAT THE TEMPERATURE OF THE HEATING ZONE (TP) IS WITHIN THE RANGE OF 2*C. LOWER THAN TO 5*C. ABOVE THAT CALCULATED FROM THE FOLLOWING EQUATION:
References Cited (Backward Citations)
US2533013A
Cited
US2811410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |