US3398441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing crimped fibrous material
Assignee: Asahi Kasei Corp
•
Filing: 1966-12-01
•
Granted: 1968-08-27
•
Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Adachi Naoyoshi
- 👤 Murono Yoshiaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/10; Y; Y10; Y10S; Y10S264/00; Y10S264/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2954587A
Cited
US2920349A
Cited
US3165563A
Cited
US3273771A
Cited
US3323978A
Cited
US3346931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |