US2508271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling gaseous suspensions of titanium dioxide in the preparation of titanium dioxide pigments from titanium tetrachloride
Assignee: EIDP Inc
•
Filing: 1947-06-11
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Granted: 1950-05-16
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Expires: 1967-06-11
Abstract
No abstract record available.
Inventors
- 👤 Krchma Ignace Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:03
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01G23/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD FOR QUICKLY COOLING A REACTIVE. HOT CHLORINE AND TIO2-CONTAINING GASEOUS SUSPENSION TO NON-REACTIVE STATE WHICH COMPRISES DIRECTLY CONTACTING SAID SUSPENSION AFTER ITS DISCHARGE FROM A REACTION ZONE IN WHICH IT IS PRODUCED WITH A LIQUID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND TITANIUM TETRACHLORIDE.
Claim 2
Independent Claim
48 words
A METHOD FOR QUICKLY COOLING A REACTIVE. HOT CHLORINE AND TIO2-CONTAINING GASEOUS SUSPENSION TO NON-REACTIVE STATE WHICH COMPRISES DIRECTLY CONTACTING SAID SUSPENSION AFTER ITS DISCHARGE FROM A REACTION ZONE IN WHICH IT IS PRODUCED WITH A LIQUID SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND TITANIUM TETRACHLORIDE.
References Cited (Backward Citations)
US2340610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |