US2157117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam treatment of polyamides
Assignee: EIDP Inc
•
Filing: 1937-02-15
•
Granted: 1939-05-09
•
Expires: 1957-02-15
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:34
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/01; D06M11/05; D06M15/00; D06M15/19; D06M15/37; D06M15/39; F; F24; F24F; F24F8/00; F24F8/10; Y; Y10; Y10S; Y10S264/00; Y10S264/73
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) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |