US1041583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of obtaining porous and fairly-pure barium oxid from barium carbonate.
Assignee: CHEMISCHE FABRIK COSWIG-ANHALT G M B H
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Filing: 1912-07-31
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Granted: 1912-10-15
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Expires: 1932-07-31
Abstract
No abstract record available.
Inventors
- 👤 Karl Bornemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:14
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/02; C01F11/04; C01F11/06
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) | 1915-10-15 | 1916-04-15 | 1916-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-10-15 | 1920-04-15 | 1920-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-10-15 | 1924-04-15 | 1924-10-15 | $7700.00 | Window Closed / Lapsed |