US2416668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of improving compounding characteristics of butadiene-1,3 copolymers by means of nu-halogen amides
Assignee: EIDP Inc
•
Filing: 1944-06-05
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Granted: 1947-03-04
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Expires: 1964-06-05
Abstract
No abstract record available.
Inventors
- 👤 Schroeder Herman Elbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/20; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2325947A
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 |