US3062673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of titanium dioxide
Assignee: Laporte Titanium Ltd
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Filing: 1959-09-14
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Granted: 1962-11-06
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Expires: 1979-09-14
Abstract
No abstract record available.
Inventors
- 👤 Wigginton Raymond James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:15
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/08; C01P; C01P2004/00; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE SUITABLE FOR INCORPORATION IN VITREOUS ENAMELS, WHEREIN A HYDROUS PRECIPITATED TITANIUM DIOXIDE OF COARSE PARTICLE SIZE SUCH THAT, BEFORE AND AFTER CALCINATION AND DRESSING IT CONSISTS AT LEAST MAINLY OF PARTICLES WITHIN THE RANGE OF 5 TO 20 MICRONS IS MIXED WITH A HYDRROUS PRECIPITATED TITANIUM DIOXIDE OF FINE PARTTICLE SIZE SUCH THAT, BEFORE AND AFTER CALCINATION AND GRINDING, IT CONSISTS OF PARTICLES OF A SIZE NOT EXCEEDING 3 MICRONS, THE PROPORTION OF THE LATTER TITANIUM DIOXIDE AMOUNTING TO 2.5 TO 50 PERCENT OF THE MIXTTURE CALCULATED AS TIO2, AND THE MIXTURE IS SUBJECTED TO CALCINATION.
Claim 2
Dependent Claim
104 words
A PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE SUITABLE FOR INCORPORATION IN VITREOUS ENAMELS, WHEREIN A HYDROUS PRECIPITATED TITANIUM DIOXIDE OF COARSE PARTICLE SIZE SUCH THAT, BEFORE AND AFTER CALCINATION AND DRESSING IT CONSISTS AT LEAST MAINLY OF PARTICLES WITHIN THE RANGE OF 5 TO 20 MICRONS IS MIXED WITH A HYDRROUS PRECIPITATED TITANIUM DIOXIDE OF FINE PARTTICLE SIZE SUCH THAT, BEFORE AND AFTER CALCINATION AND GRINDING, IT CONSISTS OF PARTICLES OF A SIZE NOT EXCEEDING 3 MICRONS, THE PROPORTION OF THE LATTER TITANIUM DIOXIDE AMOUNTING TO 2.5 TO 50 PERCENT OF THE MIXTTURE CALCULATED AS TIO2, AND THE MIXTURE IS SUBJECTED TO CALCINATION.
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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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |