US2480869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed for production of titanium dioxide and process of making same
Assignee: Individual
•
Filing: 1943-12-30
•
Granted: 1949-09-06
•
Expires: 1963-12-30
Abstract
No abstract record available.
Inventors
- 👤 Max J Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:52
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1361867A
Cited
US1766592A
Cited
US1758528A
Cited
US2062133A
Cited
GB405669A
Cited
US2303306A
Cited
US2369262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |