US2507729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium oxide pigment production
Assignee: EIDP Inc
•
Filing: 1943-09-11
•
Granted: 1950-05-16
•
Expires: 1963-09-11
Abstract
No abstract record available.
Inventors
- 👤 Mckinney Robert Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:43
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS OF OBTAINING RUTILE TIO2 NUCLEATING AGENT USEFUL IN TITANIUM SALT SOLUTION HYDROLYSES WHICH COMPRISES DIGESTING AN ALKALINE EARTH METAL TITANATE AT A TEMPERATURE RANGING FROM 60*C. TO THE BOILING POINT IN THE PRESENCE OF A 0.1-1.0 N. CONCENTRATION OF A MONOBASIC ACID WHICH DECOMPOSES THE ACIDIFIED TITANATE AND CONVERTS ITS TIO2 CONTENT TO RUTILE, AND CONTINUING SAID DIGESTION FOR A SUFFICIENT LENGTH OF TIME TO DEVELOP THE NUCLEATING CHARACTERISTICS OF THE TIO2 PRESENT IN SAID TITANATE.
Claim 2
Dependent Claim
78 words
A PROCESS OF OBTAINING RUTILE TIO2 NUCLEATING AGENT USEFUL IN TITANIUM SALT SOLUTION HYDROLYSES WHICH COMPRISES DIGESTING AN ALKALINE EARTH METAL TITANATE AT A TEMPERATURE RANGING FROM 60*C. TO THE BOILING POINT IN THE PRESENCE OF A 0.1-1.0 N. CONCENTRATION OF A MONOBASIC ACID WHICH DECOMPOSES THE ACIDIFIED TITANATE AND CONVERTS ITS TIO2 CONTENT TO RUTILE, AND CONTINUING SAID DIGESTION FOR A SUFFICIENT LENGTH OF TIME TO DEVELOP THE NUCLEATING CHARACTERISTICS OF THE TIO2 PRESENT IN SAID TITANATE.
References Cited (Backward Citations)
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Cited
US1697929A
Cited
US1922328A
Cited
US2029881A
Cited
GB463966A
Cited
US2303306A
Cited
US2301412A
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GB533227A
Cited
US2292507A
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 |