US2392710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of interpolymers
Assignee: Individual
•
Filing: 1943-07-30
•
Granted: 1946-01-08
•
Expires: 1963-07-30
Abstract
No abstract record available.
Inventors
- 👤 Wakeford Leslie Ernest
- 👤 Hewitt Donald Helmsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/02; B; B01; B01J; B01J23/00; B01J23/38; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F16/00; C08F16/12; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F283/00; C08F283/01; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C08G67/00; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C22B11/00; C22B11/02; C22B11/021; C22B11/026; C22B11/028; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1949-01-07 | 1949-07-09 | 1950-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-07 | 1953-07-09 | 1954-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-07 | 1957-07-09 | 1958-01-08 | $7700.00 | Window Closed / Lapsed |