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US3480709A
Expired / Lapsed
US
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Process for the manufacture of filaments of synthetic linear polymers of high molecular weight crimped during spinning
Assignee: Hoechst AG
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Filing: 1967-12-28
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Granted: 1969-11-25
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Expires: 1987-12-28
Abstract
No abstract record available.
Inventors
- 👤 Ingolf Jacob
- 👤 Ralf Ueberdiek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:55
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/004; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/22; D01D5/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2324397A
Cited
US3084386A
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US2875019A
Cited
CH366119A
Cited
US3213171A
Cited
US3118180A
Cited
US3246061A
Cited
NL6501352A
Cited
US3366722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |