Patent US3346931A successfully refreshed from Google Patents.
US3346931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing stretchable high bulky yarns
Assignee: Asahi Kasei Corp
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Filing: 1965-09-29
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Granted: 1967-10-17
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Expires: 1985-09-29
Abstract
No abstract record available.
Inventors
- 👤 Kashima Hiroshi
- 👤 Kurokawa Wataru
- 👤 Kai Shigeto
- 👤 Oka Kazuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:25
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
34 words
AN APPARATUS FOR PRODUCING STRETCHABLE BULKY YARNS BY EDGE CRIMPING, SAID APPARATUS COMPRISING A BLADEEDGE-LIKE PART, MEANS TO IMMERSE THE PART IN WATER, AND AN INLET GUIDE MEANS AND AN OUTLET GUIDE MEANS CAUSING
References Cited (Backward Citations)
US2022854A
Cited
US3078542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |