Patent EP0174097A1 successfully refreshed from Google Patents.
US3487142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes and apparatus for the spinning of synthetic fiber-forming polymers
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-12-28
•
Granted: 1969-12-30
•
Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Bryan Kingsley Johnson
- 👤 Stanley Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:31
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2386173A
Cited
US2910725A
Cited
US2971219A
Cited
US3249669A
Cited
US3332110A
Cited
US3303530A
Cited
US3381336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |