US2345311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkaline earth pigments and coating compositions
Assignee: Warren SD Co
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Filing: 1941-09-30
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Granted: 1944-03-28
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Expires: 1961-09-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred D Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/02; C09C1/027; C09C1/021; C09C1/028; C09C1/40; C09C1/402; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/385; C01; C01P; C01P2004/00; C01P2004/80; C09C1/0081; C09C3/00; C09C3/10
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) | 1947-03-28 | 1947-09-27 | 1948-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-28 | 1951-09-27 | 1952-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-28 | 1955-09-27 | 1956-03-28 | $7700.00 | Window Closed / Lapsed |