Patent US1775640A successfully refreshed from Google Patents.
US1775640A
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US
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Manufacture of metal oxids
Assignee: IG Farbenindustrie AG
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Filing: 1926-11-29
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Granted: 1930-09-16
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Expires: 1946-11-29
Abstract
No abstract record available.
Inventors
- 👤 Griessbach Robert
- 👤 Eisele Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:33
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0008; B01J13/0017; B01J21/00; B01J21/02; B01J21/16; B01J37/00; B01J37/02; B01J37/0236; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; C01; C01B; C01B13/00; C01B13/14; C01B13/36; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18
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) | 1933-09-15 | 1934-03-17 | 1934-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-15 | 1938-03-17 | 1938-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-15 | 1942-03-17 | 1942-09-16 | $7700.00 | Window Closed / Lapsed |