US2403207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process and products
Assignee: EIDP Inc
•
Filing: 1943-03-08
•
Granted: 1946-07-02
•
Expires: 1963-03-08
Abstract
No abstract record available.
Inventors
- 👤 Paul L Barrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:47
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/06; C07C303/00; C07C303/02; C07C303/20
Claims Analysis
Total Claims: 0
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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) | 1949-07-01 | 1949-12-31 | 1950-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-01 | 1953-12-31 | 1954-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-01 | 1957-12-31 | 1958-07-02 | $7700.00 | Window Closed / Lapsed |