US3174208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of crimping fibers derived from polyvinyl alcohol
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1960-07-15
•
Granted: 1965-03-23
•
Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Saito Hideo
- 👤 Mizutani Kazuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:02
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090669A
Cited
US2394165A
Cited
US2575839A
Cited
US2733122A
Cited
US2895786A
Cited
US2914810A
Cited
US3111740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |