US3457715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing intermittent bulked and saponified yarn
Assignee: Celanese Corp
•
Filing: 1964-07-30
•
Granted: 1969-07-29
•
Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Clare W Eldridge
- 👤 Charles W Long
- 👤 Robert O Gamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:45
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1966440A
Cited
US2089194A
Cited
GB861327A
Cited
US3105349A
Cited
US3017737A
Cited
US3144747A
Cited
US3253396A
Cited
US3113413A
Cited
US3083522A
Cited
US3194000A
Cited
US3262177A
Cited
US3091909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |