US2445042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating oriented acrylonitrile structures
Assignee: EIDP Inc
•
Filing: 1943-07-28
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Granted: 1948-07-13
•
Expires: 1963-07-28
Abstract
No abstract record available.
Inventors
- 👤 Silverman Shirleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:26
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/144; D06M13/148; D01; D01D; D01D10/00; D01D10/02; D01F; D01F6/00; D01F6/02; D01F6/18; Y; Y10; Y10S; Y10S425/00; Y10S425/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867297A
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GB387956A
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US2170439A
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US2239780A
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US2161766A
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US2176153A
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US2199411A
Cited
US2273071A
Cited
US2317409A
Cited
US2309370A
Cited
US2346208A
Cited
US2325060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-13 | 1952-01-12 | 1952-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-13 | 1956-01-12 | 1956-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-13 | 1960-01-12 | 1960-07-13 | $7700.00 | Window Closed / Lapsed |