US2460995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol plasticized with an amine adduct of butadiene cyclic sulfone
Assignee: EIDP Inc
•
Filing: 1944-12-22
•
Granted: 1949-02-08
•
Expires: 1964-12-22
Abstract
No abstract record available.
Inventors
- 👤 Mortenson Carl Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB489974A
Cited
US2271468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |