US2277393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreactive pigment
Assignee: American Zinc Lead and Smelting Co
•
Filing: 1939-05-29
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Granted: 1942-03-24
•
Expires: 1959-05-29
Abstract
No abstract record available.
Inventors
- 👤 Harlan A Depew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:13
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/04; C09C1/043; C01; C01P; C01P2004/00; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
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) | 1945-03-23 | 1945-09-22 | 1946-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-23 | 1949-09-22 | 1950-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-23 | 1953-09-22 | 1954-03-24 | $7700.00 | Window Closed / Lapsed |