US3210451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerettes
Assignee: Celanese Corp
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Filing: 1960-12-01
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Granted: 1965-10-05
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Expires: 1980-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John Albert Manning
- 👤 Bishop Clarence Edward
- 👤 Kight Vernon Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS WHICH COMPRISES EXTRUDING A SOLUTION OF CELLULOSE TRIACTEATE IN A SOLVENT PRINCIPALLY COMPRISING A HALOGENATED HYDROCARBON IN THE FOMR O F A STREAM HAVING A CONFINED SECTION LESS THAN ABOUT 1500 MICRONS LONG AND INCLUDING A CYLINDRICAL PORTION ADJACENT ITS DOWNSTREAM END AND A SECTION DIVERGENT TOWARD ITS UPSTREAM END AND COMMUNICATING WITH SAID CYLINDRICAL PORITON, THE MEETING ANGLE OF SAID DIVERGENT SECTION BEING LESS THAN ABOUT 60* AND THE CROSS-SECTIONAL AREA OF SAID CYLINDRICAL PORTION BEING ABOUT 0.02 MM.2.
Claim 2
Dependent Claim
82 words
THE PROCESS WHICH COMPRISES EXTRUDING A SOLUTION OF CELLULOSE TRIACTEATE IN A SOLVENT PRINCIPALLY COMPRISING A HALOGENATED HYDROCARBON IN THE FOMR O F A STREAM HAVING A CONFINED SECTION LESS THAN ABOUT 1500 MICRONS LONG AND INCLUDING A CYLINDRICAL PORTION ADJACENT ITS DOWNSTREAM END AND A SECTION DIVERGENT TOWARD ITS UPSTREAM END AND COMMUNICATING WITH SAID CYLINDRICAL PORITON, THE MEETING ANGLE OF SAID DIVERGENT SECTION BEING LESS THAN ABOUT 60* AND THE CROSS-SECTIONAL AREA OF SAID CYLINDRICAL PORTION BEING ABOUT 0.02 MM.2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |