Patent US3012857A successfully refreshed from Google Patents.
US3012857A
Expired / Lapsed
US
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Preparation of fibrous titanium dioxide
Assignee: EIDP Inc
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Filing: 1960-03-23
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Granted: 1961-12-12
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Expires: 1980-03-23
Abstract
No abstract record available.
Inventors
- 👤 Donald C Pease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:18
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; C04B35/62259; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR THE PRODUCTION OF FIBROUS TITANIUM DIOXIDE COMPRISING CONTACTING OXYGEN WITH MOLTEN ALKALINOUS METAL HALIDE HAVING DISSOLVED THEREIN AT LEAST ONE TITANIUM SUBHALIDE, THE HALOGEN OF SAID SUBHALIDE HAVING AN ATOMIC NUMBER GREATER THAN 9.
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE PRODUCTION OF FIBROUS TITANIUM DIOXIDE COMPRISING CONTACTING OXYGEN WITH MOLTEN ALKALINOUS METAL HALIDE HAVING DISSOLVED THEREIN AT LEAST ONE TITANIUM SUBHALIDE, THE HALOGEN OF SAID SUBHALIDE HAVING AN ATOMIC NUMBER GREATER THAN 9.
References Cited (Backward Citations)
GB535213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |