US3475139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of aluminum chloride and titanium tetrachloride from gaseous reaction gases containing chlorosilanes
Assignee: Evonik Operations GmbH
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Filing: 1967-12-01
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Granted: 1969-10-28
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Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Schwarz
- 👤 Eugen Meyer-Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:02
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1231; C01; C01B; C01B33/00; C01B33/08; C01F; C01F7/00; C01F7/48; C01F7/56; C01G; C01G1/00; C01G1/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |