Patent US3395203A successfully refreshed from Google Patents.
US3395203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making titanium dioxide nacreous pigment
Assignee: Beazer East Inc
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Filing: 1966-07-05
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Granted: 1968-07-30
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Morita Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:00
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0015; C09C1/0018; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
METHOD OF MAKING THIN, LUSTROUS FLAKES OF TITANIUM DIOXIDE COMPRISING FORMING A DILUTE SOLUTION CONTAINING BETWEEN 0.1-5 PERCENT BY WEIGHT OF A TITANIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE AND LOWER ALKYL TITANIUM ESTERS IN A VOLATILE SOLVENT, FLOWING SAID SOLUTION UNDER PRESSURE THROUGH A RECTANGULAR RESTRICTION TO FORM A CONTINUOUS THIN, FREE-FLOWING FILM OF LESS THAN 0.1 MM. IN THICKNESS, INSTANTANEOUSLY APPLYING HEAT TO BOTH SIDES OF SAID FILM TO HEAT SAID FILM TO A TEMPERATURE AT WHICH THE SOLVENT VAPORIZES TO EVAPORATE SAID SOLVENT AND FORM A SOLID FILM, BREAKING THE SOLID FILM INTO PARTICLES, AND CALCINING SAID PARTICLES TO FORM THIN LUSTROUS FLAKES OF TITANIUM DIOXIDE HAVING AN OPTICAL THICKNESS OF 30-1000 MILLIMICRONS.
Claim 2
Dependent Claim
119 words
METHOD OF MAKING THIN, LUSTROUS FLAKES OF TITANIUM DIOXIDE COMPRISING FORMING A DILUTE SOLUTION CONTAINING BETWEEN 0.1-5 PERCENT BY WEIGHT OF A TITANIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE AND LOWER ALKYL TITANIUM ESTERS IN A VOLATILE SOLVENT, FLOWING SAID SOLUTION UNDER PRESSURE THROUGH A RECTANGULAR RESTRICTION TO FORM A CONTINUOUS THIN, FREE-FLOWING FILM OF LESS THAN 0.1 MM. IN THICKNESS, INSTANTANEOUSLY APPLYING HEAT TO BOTH SIDES OF SAID FILM TO HEAT SAID FILM TO A TEMPERATURE AT WHICH THE SOLVENT VAPORIZES TO EVAPORATE SAID SOLVENT AND FORM A SOLID FILM, BREAKING THE SOLID FILM INTO PARTICLES, AND CALCINING SAID PARTICLES TO FORM THIN LUSTROUS FLAKES OF TITANIUM DIOXIDE HAVING AN OPTICAL THICKNESS OF 30-1000 MILLIMICRONS.
References Cited (Backward Citations)
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US2460811A
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US2548780A
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US3180741A
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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) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |