Patent US2641027A successfully refreshed from Google Patents.
US2641027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of staple fiber products
Assignee: Celanese Corp
•
Filing: 1947-06-19
•
Granted: 1953-06-09
•
Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 Taylor William Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D01; D01G; D01G1/00; D01G1/02; D01G1/04; D04H1/54; D04H1/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB191129030A
Cited
US1883424A
Cited
FR750978A
Cited
US2088642A
Cited
GB450963A
Cited
GB473569A
Cited
US2180172A
Cited
US2338610A
Cited
US2416390A
Cited
US2410307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |