US3214284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of pigmentary titanium oxide
Assignee: PPG Industries Inc
•
Filing: 1962-04-25
•
Granted: 1965-10-26
•
Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 William L Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:19
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE PROCESS OF PRODUCING PIGMENTARY TITANIUM OXIDE BY VAPOR PHASE OXIDATION OF TITANIUM TETRAHALIDE, THE IMPROVEMENT WHICH COMPRISES PROJECTING A CENTRAL STREAM CONTAINING OXYGEN AND FEEDING A SEPARATE ADJACENT STREAM CONTAINING TITANIUM TETRAHALIDE VAPOR TO A REACTION ZONE WHERE THE LINEAR VELOCITY OF THE STREAM CONTAINING OXYGEN IS GREATER THAN THE LINEAR VELOCITY OF THE STREAM CONTAINING TITANIUM TETRAHALIDE SUCH THAT THE OXYGEN STREAM SERVES TO SUCH AND CARRY THE LOWER VELOCITY TITANIUM TETRAHALIDE STREAM INTO THE ZONE OF REACTION.
Claim 2
Dependent Claim
81 words
IN THE PROCESS OF PRODUCING PIGMENTARY TITANIUM OXIDE BY VAPOR PHASE OXIDATION OF TITANIUM TETRAHALIDE, THE IMPROVEMENT WHICH COMPRISES PROJECTING A CENTRAL STREAM CONTAINING OXYGEN AND FEEDING A SEPARATE ADJACENT STREAM CONTAINING TITANIUM TETRAHALIDE VAPOR TO A REACTION ZONE WHERE THE LINEAR VELOCITY OF THE STREAM CONTAINING OXYGEN IS GREATER THAN THE LINEAR VELOCITY OF THE STREAM CONTAINING TITANIUM TETRAHALIDE SUCH THAT THE OXYGEN STREAM SERVES TO SUCH AND CARRY THE LOWER VELOCITY TITANIUM TETRAHALIDE STREAM INTO THE ZONE OF REACTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |