US2883260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of monofilament of a polymer or copolymer of acrylonitrile
Assignee: Wyeth Holdings LLC
•
Filing: 1953-09-21
•
Granted: 1959-04-21
•
Expires: 1973-09-21
Abstract
No abstract record available.
Inventors
- 👤 James A Melchore
- 👤 Laube Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:51
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN THE PRODUCTION OF A SHAPED SYNTHETIC RESIN ARTICLE COMPRISING AT LEAST 50 PERCENT BY WEIGHT OF POLYMERIZED ACRYLONITRILE BY A PROCESS INCLUDING COAGULATING A SOLUTION OF THE RESIN TO A SHAPED AQUAGEL ARTICLE IN AN AQUEOUS BATH AND STRETCHING THE COAGULATED ARTILE TO AT LEAST TWICE ITS LENGHT, THE METHOD WHICH COMPRISES CONTRACTING THE LENGTH OF THE STRETCHED ARTICLE AT LEAST ABOUT 20 PERCENT BY HEATING, AT LEAST A SUBSTANTIAL PORTION OF SAID CONTRACTION BEING PRODUCED BY HEATING WHILE THE ARTICLE HAS AN INITIAL WATER CONTENT OF AT LEAST ABOUT 9.0 PERCENT OF THE TOTAL WEIGHT.
Claim 2
Dependent Claim
97 words
IN THE PRODUCTION OF A SHAPED SYNTHETIC RESIN ARTICLE COMPRISING AT LEAST 50 PERCENT BY WEIGHT OF POLYMERIZED ACRYLONITRILE BY A PROCESS INCLUDING COAGULATING A SOLUTION OF THE RESIN TO A SHAPED AQUAGEL ARTICLE IN AN AQUEOUS BATH AND STRETCHING THE COAGULATED ARTILE TO AT LEAST TWICE ITS LENGHT, THE METHOD WHICH COMPRISES CONTRACTING THE LENGTH OF THE STRETCHED ARTICLE AT LEAST ABOUT 20 PERCENT BY HEATING, AT LEAST A SUBSTANTIAL PORTION OF SAID CONTRACTION BEING PRODUCED BY HEATING WHILE THE ARTICLE HAS AN INITIAL WATER CONTENT OF AT LEAST ABOUT 9.0 PERCENT OF THE TOTAL WEIGHT.
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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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |