US3463846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of acrylonitrile composite fibers
Assignee: Japan Exlan Co Ltd
•
Filing: 1966-09-07
•
Granted: 1969-08-26
•
Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Kazumi Nakagawa
- 👤 Keijiro Kuratani
- 👤 Nobuhiro Tsutsui
- 👤 Shinsaku Minami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:15
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2987797A
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US3039524A
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US3038240A
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US3339250A
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US3330896A
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FR1382834A
Cited
US3316611A
Cited
US3363041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |