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Patent US1941285A successfully refreshed from Google Patents.
US1941285A
Expired / Lapsed
US
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Titanium sulphate compounds
Assignee: IG Farbenindustrie AG
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Filing: 1929-12-27
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Granted: 1933-12-26
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Expires: 1949-12-27
Abstract
No abstract record available.
Inventors
- 👤 Teichmann Ludwig
- 👤 Noerr Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:45
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/04; C01; C01G; C01G23/00; C01G23/008
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) | 1936-12-25 | 1937-06-26 | 1937-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-25 | 1941-06-26 | 1941-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-25 | 1945-06-26 | 1945-12-26 | $7700.00 | Window Closed / Lapsed |