Patent FR867442A successfully refreshed from Google Patents.
US3109697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet spinning of cellulose triester
Assignee: Celanese Corp
•
Filing: 1959-11-03
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Granted: 1963-11-05
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Cipriani Cipriano
- 👤 John W Soehngen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/02; D01F2/00; D01F2/24; D01F2/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE PROCESS WHICH COMPRISES EXTRUDING A SOLUTION OF A CELLULOSE TRIESTER INTO A COAGULAENT SPIN BATH IN THE PRESENCE OF A MINOR AMOUNT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON OILS, SILICON OILS AND POLY-LOWER ALKYLENE GLYCOLS.
Claim 2
Dependent Claim
40 words
THE PROCESS WHICH COMPRISES EXTRUDING A SOLUTION OF A CELLULOSE TRIESTER INTO A COAGULAENT SPIN BATH IN THE PRESENCE OF A MINOR AMOUNT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON OILS, SILICON OILS AND POLY-LOWER ALKYLENE GLYCOLS.
References Cited (Backward Citations)
US1997632A
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US2075027A
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US2424743A
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US2587505A
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US2764468A
Cited
US2746839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |