US2511218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium oxide pigment production
Assignee: EIDP Inc
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Filing: 1946-07-01
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Granted: 1950-06-13
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Expires: 1966-07-01
Abstract
No abstract record available.
Inventors
- 👤 Olson Carl Marcus
- 👤 Booge James Eliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:29
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G23/0532; C01G23/0534; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR PRODUCING A DUAL-CONDITIONED, ACTIVATED TIO2 NUCLEATING AGENT FOR TITANIUM SULFATE SOLUTION HYDROLYSIS WHICH COMPRISES MIXING A MONOVALENT ANION TITANIUM SALT SOLUTION WITH SUFFICIENT ALKALI SOLUTION TO PRECIPITATE ALL OF ITS TITANIUM CONTENT AS HYDROUS TITANIUM OXIDE AND INITIALLY MAINTAIN THE LATTER FOR A PERIOD OF AT LEAST ONE-QUARTER OF A MINUTE AS AN ALKALINE SUSPENSION, AND SUBSEQUENTLY MAINTAINING THE RESULTING ALKALINE-TREATED PRODUCT IN A SURROUNDING ACIDIC ENVIRONMENT RANGING FROM .1 TO 1. N AND AT AN ELEVATED TEMPERATURE UNTIL THE NUCLEATING CHARACTERISTICS OF SAID TIO2 ARE DEVELOPED.
Claim 2
Dependent Claim
90 words
A PROCESS FOR PRODUCING A DUAL-CONDITIONED, ACTIVATED TIO2 NUCLEATING AGENT FOR TITANIUM SULFATE SOLUTION HYDROLYSIS WHICH COMPRISES MIXING A MONOVALENT ANION TITANIUM SALT SOLUTION WITH SUFFICIENT ALKALI SOLUTION TO PRECIPITATE ALL OF ITS TITANIUM CONTENT AS HYDROUS TITANIUM OXIDE AND INITIALLY MAINTAIN THE LATTER FOR A PERIOD OF AT LEAST ONE-QUARTER OF A MINUTE AS AN ALKALINE SUSPENSION, AND SUBSEQUENTLY MAINTAINING THE RESULTING ALKALINE-TREATED PRODUCT IN A SURROUNDING ACIDIC ENVIRONMENT RANGING FROM .1 TO 1. N AND AT AN ELEVATED TEMPERATURE UNTIL THE NUCLEATING CHARACTERISTICS OF SAID TIO2 ARE DEVELOPED.
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) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |