US3424834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulked synthetic fibres
Assignee: Celanese Canada Inc
•
Filing: 1966-03-18
•
Granted: 1969-01-28
•
Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Sohinder Nath Chopra
- 👤 Claude J Cormier
- 👤 Joseph D L Tessier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:00
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/20; D02G1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3019507A
Cited
US3137989A
Cited
US3152380A
Cited
US3256258A
Cited
US3296681A
Cited
US3262257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |