US3050822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pill resistant polyamide fiber
Assignee: EIDP Inc
•
Filing: 1961-03-09
•
Granted: 1962-08-28
•
Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Otto J Matray
- 👤 Jr William H Stine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:36
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/20; D02G1/205; D06; D06M; D06M11/00; D06M11/32; D06M11/50; Y; Y10; Y10S; Y10S8/00; Y10S8/21; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A DRAWN ORIENTED CRIMPED POLYAMIDE FIALMENT HAVING FREQUENT, SPACED, WEAK SPOTS IN THE LENGTH THEREOF, SAID FILAMENT BEING CHARACTERIZED AS TO WEAK SPOT FREQUENCY AND SEVERITY BY A SIGNIFICANT DECREASE IN THE BREAK TENACITY (MEASURED IN GRAMS/DENIER) OF FILAMENT SAMPLES AS THE SAMPLE LENGTH IS INCREASED FROM THE ZERO LENGTH, THERE BEING AT LEAST ONE WEAK SPOT IN SUBSTANTIALLY ALL OF A PLURALITY OF ONE INCH LENGTHS.
Claim 2
Dependent Claim
67 words
A DRAWN ORIENTED CRIMPED POLYAMIDE FIALMENT HAVING FREQUENT, SPACED, WEAK SPOTS IN THE LENGTH THEREOF, SAID FILAMENT BEING CHARACTERIZED AS TO WEAK SPOT FREQUENCY AND SEVERITY BY A SIGNIFICANT DECREASE IN THE BREAK TENACITY (MEASURED IN GRAMS/DENIER) OF FILAMENT SAMPLES AS THE SAMPLE LENGTH IS INCREASED FROM THE ZERO LENGTH, THERE BEING AT LEAST ONE WEAK SPOT IN SUBSTANTIALLY ALL OF A PLURALITY OF ONE INCH LENGTHS.
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |