Patent US1885187A successfully refreshed from Google Patents.
US1885187A
Expired / Lapsed
US
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Production of titanium pigments
Assignee: KREBS PIGMENT AND COLOR Corp
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Filing: 1928-01-17
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Granted: 1932-11-01
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Expires: 1948-01-17
Abstract
No abstract record available.
Inventors
- 👤 Rohden Charles De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:41
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/0475
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) | 1935-11-01 | 1936-05-02 | 1936-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-01 | 1940-05-02 | 1940-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-01 | 1944-05-02 | 1944-11-01 | $7700.00 | Window Closed / Lapsed |