US3436450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for heat relaxing stretched polyamide filament
Assignee: Viscosuisse SA
•
Filing: 1965-01-19
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Granted: 1969-04-01
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Expires: 1985-01-19
Abstract
No abstract record available.
Inventors
- 👤 Hugo Specker
- 👤 Dietrich Mohrle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D02J1/229; D02J13/00; D02J13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
PROCESS FOR THE MANUFACTURE OF POLYAMIDE FILAMENTS OF LOW AND UNIFORM TENDENCY TO SHRINK WHICH COMPRISES CAUSING FRESHLY STRETCHED FILAMENTS TO MOVE IN FOUR SUCCESSIVE CIRCUMFERENTIAL PATHS DEFINED BY FOUR SUCCESSIVE PORTIONS OF A ROLLER ALONG THE LENGTH OF THE ROLLER, THE FILAMENTS BEING STRETCHED BY MOVEMENT IN THE FIRST PATH WHICH IS AT A TEMPERATURE OF AT MOST 110*C., THEN BEING RELAXED WHILE MOVING IN THE SECOND PATH WHICH IS OF SMALL DI-
Claim 2
Dependent Claim
74 words
PROCESS FOR THE MANUFACTURE OF POLYAMIDE FILAMENTS OF LOW AND UNIFORM TENDENCY TO SHRINK WHICH COMPRISES CAUSING FRESHLY STRETCHED FILAMENTS TO MOVE IN FOUR SUCCESSIVE CIRCUMFERENTIAL PATHS DEFINED BY FOUR SUCCESSIVE PORTIONS OF A ROLLER ALONG THE LENGTH OF THE ROLLER, THE FILAMENTS BEING STRETCHED BY MOVEMENT IN THE FIRST PATH WHICH IS AT A TEMPERATURE OF AT MOST 110*C., THEN BEING RELAXED WHILE MOVING IN THE SECOND PATH WHICH IS OF SMALL DI-
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |