US2264415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of artificial filaments, yarns, and similar materials
Assignee: Celanese Corp
•
Filing: 1938-02-23
•
Granted: 1941-12-02
•
Expires: 1958-02-23
Abstract
No abstract record available.
Inventors
- 👤 Taylor William Ivan
- 👤 Gibbins Leslie Brisbane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; D01D5/20; D02; D02G; D02G1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2973; Y10T428/2976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-12-01 | 1945-06-02 | 1945-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-01 | 1949-06-02 | 1949-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-01 | 1953-06-02 | 1953-12-02 | $7700.00 | Window Closed / Lapsed |