Patent US3755161A successfully refreshed from Google Patents.
Patent US2512079A successfully refreshed from Google Patents.
US2512079A
Expired / Lapsed
US
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Production of titanium oxide pigments
Assignee: EIDP Inc
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Filing: 1947-05-29
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Granted: 1950-06-20
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Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Werner Alfred John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:57
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/04; C09C3/043; C09C3/06; C01; C01P; C01P2006/00; C01P2006/19; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A PROCESS FOR THE PRODUCTION OF PIGMENT TITANIUM DIOXIDE BY THE OXIDATION OF TITANIUM TETRACHLORIDE, THE STEP OF COMMINGLING WITH THE TITANIUM DIOXIDE OXIDATION PRODUCT CONTAINING ADSORBED CHLORINE A MINOR AMOUNT OF AN OXYGENCOMPOUND OF BORON, AND HEATING THE RESULTING MIXTURE AT A TEMPERTURE HOT TO EXCEED 750*C.
Claim 2
Dependent Claim
49 words
IN A PROCESS FOR THE PRODUCTION OF PIGMENT TITANIUM DIOXIDE BY THE OXIDATION OF TITANIUM TETRACHLORIDE, THE STEP OF COMMINGLING WITH THE TITANIUM DIOXIDE OXIDATION PRODUCT CONTAINING ADSORBED CHLORINE A MINOR AMOUNT OF AN OXYGENCOMPOUND OF BORON, AND HEATING THE RESULTING MIXTURE AT A TEMPERTURE HOT TO EXCEED 750*C.
References Cited (Backward Citations)
US2055221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |