US2788563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New filaments of polymers or copolymers having a basis of acrylonitrile and process for their manufacture
Assignee: Crylor SA
•
Filing: 1952-12-15
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Granted: 1957-04-16
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Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Stuchlik Rene Emile Fernand
- 👤 Rosset Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:33
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A SYNTHETIC FILAMENT CONSISTING OF A POLYMER OF ACRYLONITRILE, SAID FILAMENT HAVING IN TRANSVERSE SECTION AN INDENTED CONTOUR AND HAVING A CELLULAR STRUCTURE THROUGHOUT ITS LENGTH, THE CELLULES CONTAINING NO SOLID PARTICLES AND HAVING A VERY SMALL CROSS-SECTION IN RELATION TO THAT OF THE FILAMENT AND BEING IRREGULARLY DISPERSED IN THE MASS OF THE FILAMENT.
Claim 2
Dependent Claim
55 words
A SYNTHETIC FILAMENT CONSISTING OF A POLYMER OF ACRYLONITRILE, SAID FILAMENT HAVING IN TRANSVERSE SECTION AN INDENTED CONTOUR AND HAVING A CELLULAR STRUCTURE THROUGHOUT ITS LENGTH, THE CELLULES CONTAINING NO SOLID PARTICLES AND HAVING A VERY SMALL CROSS-SECTION IN RELATION TO THAT OF THE FILAMENT AND BEING IRREGULARLY DISPERSED IN THE MASS OF THE FILAMENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |