US2980510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fibrous titanium dioxide
Assignee: —
•
Filing: —
•
Granted: 1961-04-18
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:52
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C01P; C01P2006/00; C01P2006/60; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
PROCESS FOR PREPARING FIBROUS TITANIUM DIOXIDE WHICH COMPRISES REACTING A HALIDE OF TETRAVALENT TITANIUM WITH A MELT SELECTED FROM THE CLASS CONSISTING OF BORIC OXIDE, ALKALI METAL BORATES AND MIXTURES OF BORIC OXIDE WITH AT LEAST ONE ALKALI METAL BORATE.
Claim 2
Dependent Claim
40 words
PROCESS FOR PREPARING FIBROUS TITANIUM DIOXIDE WHICH COMPRISES REACTING A HALIDE OF TETRAVALENT TITANIUM WITH A MELT SELECTED FROM THE CLASS CONSISTING OF BORIC OXIDE, ALKALI METAL BORATES AND MIXTURES OF BORIC OXIDE WITH AT LEAST ONE ALKALI METAL BORATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |