US2212917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic chrome pigment production
Assignee: EIDP Inc
•
Filing: 1937-07-23
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Granted: 1940-08-27
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Expires: 1957-07-23
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Horning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:19
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/14; C09C1/20; C09C3/00; C09C3/06; C09C3/063; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/60
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) | 1943-08-27 | 1944-02-26 | 1944-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-27 | 1948-02-26 | 1948-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-27 | 1952-02-26 | 1952-08-27 | $7700.00 | Window Closed / Lapsed |