Patent US2192956A successfully refreshed from Google Patents.
US2192956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment manufacture
Assignee: EIDP Inc
•
Filing: 1936-07-22
•
Granted: 1940-03-12
•
Expires: 1956-07-22
Abstract
No abstract record available.
Inventors
- 👤 Clifford K Sloan
- 👤 Gordon D Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:49
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C09B; C09B67/00; C09B67/0001; C09B67/002; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1943-03-12 | 1943-09-11 | 1944-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-12 | 1947-09-11 | 1948-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-12 | 1951-09-11 | 1952-03-12 | $7700.00 | Window Closed / Lapsed |