US3528128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinneret for manufacture of odd-shaped hollow filaments
Assignee: Teijin Ltd
•
Filing: 1967-08-28
•
Granted: 1970-09-15
•
Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Shoichi Murakami
- 👤 Haruhiko Toda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; Y; Y10; Y10S; Y10S425/00; Y10S425/217
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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |