US2829027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry spinning process for making y-shaped filaments
Assignee: Eastman Kodak Co
•
Filing: 1953-12-28
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Granted: 1958-04-01
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 David W Raynolds
- 👤 Frank W Abernathy
- 👤 Arthur S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:57
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/04; D01D5/253; D01F; D01F2/00; D01F2/24; D01F2/28; D01F2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF FORMING CELLULOSE ORGANIC ACID ESTER FILAMENTS HAVING A Y-SHAPED CROSS-SECTION, THE LEGS OF THE Y BEING SUBSTANTIALLY EQUAL IN LENGTH AND THE ANGLES BETWEEN ADJACENT LEGS OF THE Y BEING SUBSTANTIALLY EQUAL, WHICH COMPRISES EXTRUDING A CELLULOSE ORGANIC ACID ESTER FILAMENT FORMING SOLUTION THROUGH A SPINNERETTE EQUIPPED WITH EQUILATERAL TRIANGULAR EXTRUSION ORIFICES AND INTO A DRY SPINNING CABINET, DRAFTING THE FILAMENTS AT A DRAFT RATIO WITHIN THE RANGE OF APPROXIMATELY 0.7 TO 1.4 WHILE DRYING THE FILAMENTS.
Claim 2
Independent Claim
80 words
THE METHOD OF FORMING CELLULOSE ORGANIC ACID ESTER FILAMENTS HAVING A Y-SHAPED CROSS-SECTION, THE LEGS OF THE Y BEING SUBSTANTIALLY EQUAL IN LENGTH AND THE ANGLES BETWEEN ADJACENT LEGS OF THE Y BEING SUBSTANTIALLY EQUAL, WHICH COMPRISES EXTRUDING A CELLULOSE ORGANIC ACID ESTER FILAMENT FORMING SOLUTION THROUGH A SPINNERETTE EQUIPPED WITH EQUILATERAL TRIANGULAR EXTRUSION ORIFICES AND INTO A DRY SPINNING CABINET, DRAFTING THE FILAMENTS AT A DRAFT RATIO WITHIN THE RANGE OF APPROXIMATELY 0.7 TO 1.4 WHILE DRYING THE FILAMENTS.
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |