US3549322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of acicular rutile pigments from hydrochloric acid titanium chloride solutions
Assignee: Titan GmbH
•
Filing: 1969-02-03
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Granted: 1970-12-22
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Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 Edgar Klein
- 👤 Achim Kulling
- 👤 Helmut Steinhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:12
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G23/0536; C01G23/0538; C09C1/3607; C09C3/00; C09C3/04; C09C3/043; C09C3/06; C01P; C01P2004/00; C01P2004/10; C01P2004/54; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369246A
Cited
US2516548A
Cited
US3236596A
Cited
US3337300A
Cited
US3407033A
Cited
US3329484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |