US3069282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing pigments
Assignee: PPG Industries Inc
•
Filing: 1960-03-09
•
Granted: 1962-12-18
•
Expires: 1980-03-09
Abstract
No abstract record available.
Inventors
- 👤 Edward M Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN THE PROCESS FOR PRODUCING PIGMENTARY TITANIUM DIOXIDE BY VAPOR PHASE OXIDATION OF TITANIUM TETRACHLORIDE, THE IMPROVEMENT WHICH COMPRISES INTERMIXING IN A REACTION ZONE AT FROM 1400*F. TO 2700*F. SEPARATE STREAMS OF TITANIUM VAPOR, ESSENTIALLY FREE OF ELEMENTAL OXYGEN, AND OF A HOT MIXTURE OF ELEMENTAL OXYGEN AND PRODUCTS OF COMBUSTION PRODUCED BY INITATING COMBUSTION OF A CARBONACEOUS MATERIAL IN THE PRES-
Claim 2
Dependent Claim
62 words
IN THE PROCESS FOR PRODUCING PIGMENTARY TITANIUM DIOXIDE BY VAPOR PHASE OXIDATION OF TITANIUM TETRACHLORIDE, THE IMPROVEMENT WHICH COMPRISES INTERMIXING IN A REACTION ZONE AT FROM 1400*F. TO 2700*F. SEPARATE STREAMS OF TITANIUM VAPOR, ESSENTIALLY FREE OF ELEMENTAL OXYGEN, AND OF A HOT MIXTURE OF ELEMENTAL OXYGEN AND PRODUCTS OF COMBUSTION PRODUCED BY INITATING COMBUSTION OF A CARBONACEOUS MATERIAL IN THE PRES-
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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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |