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Patent US3384694A successfully refreshed from Google Patents.
US3384694A
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Method of producing aligned acrylonitrile polymer filament yarns
Assignee: Asahi Kasei Corp
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Filing: 1964-11-12
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Granted: 1968-05-21
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Nakayama Chozo
- 👤 Kaku Teiichi
- 👤 Aizawa Hiide
- 👤 Iwamoto Takeaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:10
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0463; D01D5/00; D01D5/06; D01F; D01F11/00; D01F11/04; D01F11/06; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 0
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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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |