US2477658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymeric vinylidene chloride composition
Assignee: Dow Chemical Co
•
Filing: 1947-01-30
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Granted: 1949-08-02
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Expires: 1967-01-30
Abstract
No abstract record available.
Inventors
- 👤 Hugo L Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |