Patent US2560053A successfully refreshed from Google Patents.
US2560053A
Expired / Lapsed
US
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Stabilization of polyacrylonitrile solutions
Assignee: EIDP Inc
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Filing: 1950-02-16
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Granted: 1951-07-10
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Expires: 1970-02-16
Abstract
No abstract record available.
Inventors
- 👤 Webb Myron Quentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
AS A NEW COMPOSITION OF MATTER, A MIXTURE COMPRISING A SULFHYDRYL CONTAINING SUBSTANCE, A SULFOXY ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID, ORGANIC SULFONIC ACIDS AND HYDRATED SALTS OF ORGANIC SULFONIC ACIDS, N,N,DIMETHYLFORMAMIDE AND A POLYMER OF ACRYLONITRILE.
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) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |