Patent US2337162A successfully refreshed from Google Patents.
US2337162A
Expired / Lapsed
US
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Process for making improved pigments
Assignee: EIDP Inc
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Filing: 1941-11-27
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Granted: 1943-12-21
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Expires: 1961-11-27
Abstract
No abstract record available.
Inventors
- 👤 Ray L Mccleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:29
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/04; C09C3/041; C09C1/00; C09C1/02; C09C1/021; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/19; 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) | 1946-12-20 | 1947-06-21 | 1947-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-20 | 1951-06-21 | 1951-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-20 | 1955-06-21 | 1955-12-21 | $7700.00 | Window Closed / Lapsed |