US3241928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fibrous titanium dioxide
Assignee: EIDP Inc
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Filing: 1962-09-28
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Granted: 1966-03-22
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Donald C Pease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:20
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C01; C01P; C01P2002/00; C01P2002/60; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PROCESS FOR PREPARING TITANIUM DIOXIDE FIBERS WHICH COMPRISES: (A) PREPARING AT A TEMPERATURE ABOUT 1000*C. A MOLTEN MIXTURE CONTAING DISSOLVED PREFORMED TITANIUM DIOXIDE, BORIC OXIDE, AND AT LEAST ONE METAL HALIDE SELECTED FROM THE GROUP CONSISTING AF ALKALI METAL HALIDES AND ALKALINE EARTH METAL HALIDES; AND (B) COOLING THE MOLTEN MIXTURE TO A TEMPERATURE BELOW 1000*C., WHEREUPON TITANIUM DIOXIDE FIBERS CRYSTALLIZE FROM THE COOLED MIXTURE.
Claim 2
Dependent Claim
65 words
PROCESS FOR PREPARING TITANIUM DIOXIDE FIBERS WHICH COMPRISES: (A) PREPARING AT A TEMPERATURE ABOUT 1000*C. A MOLTEN MIXTURE CONTAING DISSOLVED PREFORMED TITANIUM DIOXIDE, BORIC OXIDE, AND AT LEAST ONE METAL HALIDE SELECTED FROM THE GROUP CONSISTING AF ALKALI METAL HALIDES AND ALKALINE EARTH METAL HALIDES; AND (B) COOLING THE MOLTEN MIXTURE TO A TEMPERATURE BELOW 1000*C., WHEREUPON TITANIUM DIOXIDE FIBERS CRYSTALLIZE FROM THE COOLED MIXTURE.
References Cited (Backward Citations)
US3012857A
Cited
US3065091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |