Patent US3131427A successfully refreshed from Google Patents.
US3131427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerette
Assignee: Celanese Corp
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Filing: 1958-10-17
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Granted: 1964-05-05
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Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 John P Mika
- 👤 Clarence E Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A SPINNERETTE HAVING AT LEAST ONE PAIR OF SPACED JET OPENINGS FOR PRODUCING AN INDIVIDUAL FILAMENT, THE OPENINGS EACH COMPRISING A SEGMENT OF A CLOSED CONIC SECTION WITH THE STRAIGHT SIDES FACING EACH OTHER, THE SHORTEST DISTANCE BETWEEN OPPOSED STRAIGHT SIDES OF THE OPENINGS OF EACH PAIR BEING LESS THAN 60% OF THE LONGER OF SAID STRIAGHT SIDES.
Claim 2
Dependent Claim
58 words
A SPINNERETTE HAVING AT LEAST ONE PAIR OF SPACED JET OPENINGS FOR PRODUCING AN INDIVIDUAL FILAMENT, THE OPENINGS EACH COMPRISING A SEGMENT OF A CLOSED CONIC SECTION WITH THE STRAIGHT SIDES FACING EACH OTHER, THE SHORTEST DISTANCE BETWEEN OPPOSED STRAIGHT SIDES OF THE OPENINGS OF EACH PAIR BEING LESS THAN 60% OF THE LONGER OF SAID STRIAGHT SIDES.
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |