US2416880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol insolubilized with chlorinated polymeric ethers
Assignee: EIDP Inc
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Filing: 1943-10-23
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Granted: 1947-03-04
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Expires: 1963-10-23
Abstract
No abstract record available.
Inventors
- 👤 Mortenson Carl Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:31
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2119531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |