US3025563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of filaments of varying denier
Assignee: Celanese Corp
•
Filing: 1958-05-15
•
Granted: 1962-03-20
•
Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Carman
- 👤 Harold W Connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/227; D01; D01D; D01D5/00; D01D5/20; D01H; D01H5/00; D01H5/18; D01H5/32; D01H5/36
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |