Patent US1651567A successfully refreshed from Google Patents.
US3535866A
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Process and apparatus for producing crimped yarns
Assignee: Nippon Rayon Co Ltd
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Filing: 1969-02-25
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Granted: 1970-10-27
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Expires: 1989-02-25
Abstract
No abstract record available.
Inventors
- 👤 Motohiro Tsuruta
- 👤 Hiroshiro Kimura
- 👤 Akio Koshimo
- 👤 Nagamasa Kanzaki
- 👤 Heiji Arimoto
- 👤 Matafumi Ishibashi
- 👤 Katsumi Yasuzuka
- 👤 Mitsumasa Hara
- 👤 Yoshinobu Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/0206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |