US3025135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low acid purified titanium solution and products therefrom
Assignee: Akzo Nobel Paints LLC
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Filing: 1959-06-11
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Granted: 1962-03-13
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Expires: 1979-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lester A Kenworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:33
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/90; C01B17/901; C01B17/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR PURIFYING A SULFUR ACID-CONTAINING FEED SOLUTION HAVING METALLIC SOLUTES WHICH CONSIST ESSENTIALLY OF TETRAVALENT TITANIUM VALUES AND AT LEAST ONE ASSOCIATED METAL IMPURITY WITH A VALENCY STATE BELOW 4, THE ASSOCIATED METALLIC IMPURITY BEING SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CALCIUM, COBALT, CHROMIUM, COPPER, MAGNESIUM, MANGANESE, MOLYBDENUM, NICKEL, VANADIUM, ZINC, AND ZIRCONIUM, WHICH COMPRISES CONTACTING SAID FEED SOLUTION WITH A WATER-INSOLUBLE, ACID-RESISTANT CATION EXCHANGE RESIN CONTAINING AS THE EXCHANGING CATION A CATIOIN SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, MAGNESIUM, AND AMMONIUM, AND RECOVERING FROM CONTACT WITH SAID RESIN AS PRODUCT A SOLUTION REDUCED IN SAID ASSOCIATED METALLIC IMPURITY AND CONTAINING THE BULK OF SAID TETRAVALENT TITANIUM VALUES.
Claim 2
Dependent Claim
115 words
A PROCESS FOR PURIFYING A SULFUR ACID-CONTAINING FEED SOLUTION HAVING METALLIC SOLUTES WHICH CONSIST ESSENTIALLY OF TETRAVALENT TITANIUM VALUES AND AT LEAST ONE ASSOCIATED METAL IMPURITY WITH A VALENCY STATE BELOW 4, THE ASSOCIATED METALLIC IMPURITY BEING SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CALCIUM, COBALT, CHROMIUM, COPPER, MAGNESIUM, MANGANESE, MOLYBDENUM, NICKEL, VANADIUM, ZINC, AND ZIRCONIUM, WHICH COMPRISES CONTACTING SAID FEED SOLUTION WITH A WATER-INSOLUBLE, ACID-RESISTANT CATION EXCHANGE RESIN CONTAINING AS THE EXCHANGING CATION A CATIOIN SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, MAGNESIUM, AND AMMONIUM, AND RECOVERING FROM CONTACT WITH SAID RESIN AS PRODUCT A SOLUTION REDUCED IN SAID ASSOCIATED METALLIC IMPURITY AND CONTAINING THE BULK OF SAID TETRAVALENT TITANIUM VALUES.
References Cited (Backward Citations)
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US2468471A
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US2589909A
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US2631127A
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US2671714A
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US2857242A
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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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |