US2987764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the production and treatment of filaments
Assignee: Celanese Corp
•
Filing: 1953-10-08
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Granted: 1961-06-13
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Expires: 1973-10-08
Abstract
No abstract record available.
Inventors
- 👤 Weber Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:12
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
APPARATUS FOR THE PRODUCTION AND TREATMENT OF FILAMENTARY MATERIAL, SAID APPARATUS COMPRISING AN EXTENDED SPINNING COLUMN FOR FORMING FILAMENTARY MATERIAL, MEANS FOR PASSING SPIN BATH AND MEANS FOR PASSING SPINNING SOLUTION INTO ONE END OF SAID COLUMN AND MEANS FOR WITHDRAWING SPIN BATH AND FILAMENTARY MATERIAL FROM THE OTHER END THEREOF, AND A TUBE FOR TREATING SAID FILAMENTARY
References Cited (Backward Citations)
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US1871100A
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US2203793A
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US2565935A
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US2725276A
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US2758909A
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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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |