US3485913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New method of manufacturing acrylic fibers and the related products
Assignee: Teijin Ltd
•
Filing: 1966-10-20
•
Granted: 1969-12-23
•
Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Kozo Yamada
- 👤 Yasuo Saji
- 👤 Ichiro Yamamoto
- 👤 Shigeru Ikegami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F11/00; D01F11/04; D01F11/06; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2761754A
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US2853453A
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US2988419A
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US3140957A
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US3113369A
Cited
US3097054A
Cited
US3097055A
Cited
US3129273A
Cited
US3399260A
Cited
US3329758A
Cited
US3384694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |