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US3565580A
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Process for the manufacture of rutile pigments with rounded-off particle from titanium chloride solutions
Assignee: Titan GmbH
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Filing: 1969-02-10
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Granted: 1971-02-23
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Expires: 1989-02-10
Abstract
Abstract THE INVENTION IS CONCERNED WITH A PROCESS FOR THE MANUFACTURE OF ROUNDED-OFF RUTILE PIGMENT PARTICLES BY THE HYDROLYSIS OF HYDROCHLORIC ACID SOLUTIONS CONTAINING TITANIUM CHLORIDE SOLUTION, WHICH CONTAIN LESS THAN 0.2% SILICIC ACID.
Inventors
- 👤 Edgar Klein
- 👤 Achim Kulling
- 👤 Rudiger Paul
- 👤 Helmut Steinhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:26
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G23/0536; C01P; C01P2004/00; C01P2004/10; C01P2004/30; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |