US3284159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmentary tio2 manufacture
Assignee: EIDP Inc
•
Filing: 1964-01-03
•
Granted: 1966-11-08
•
Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Kruse Willard Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:29
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; B; B01; B01J; B01J19/00; B01J19/02; C01B; C01B13/00; C01B13/14; C01B13/20; C01B13/22; C23; C23C; C23C24/00; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0236; B01J2219/024; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD FOR PREVENTING CORROSION AND DETERIORATION OF A METALLIC INPERFORATED REACTION ZONE WILL IN WHICH ZONE OXIDATION AT AN ELEVATED TEMPERATURE OF TITANIUM TETRACHLORIDE TO PRODUCE A TITANIUM OXIDE IS EFFECTED WHICH COMPRISES COATING THE INTERNAL SURFACE OF THE METALLIC IMPERFORATED REACTION ZONE WALL WITH A LAYER OF TITANIUM DIOXIDE HAVING AN AVERAGE THICKNESS RANGING FROM 0.1 INCH TO 0.1 INCH IN ORDER TO FORM A GLAZED SURFACE THEREON THAT PREVENTS CORROSION OF THE METALLIC SURFACE AND TIO2 CONTAMINATION AND SUBSEQUENTLY REACTING TITANIUM TETRACHLORIDE WITH OXYGEN IN THE VAPOR PHASE IN THE REACTION ZONE WHILE COOLING THE METALLIC REACTION ZONE WALL TO A TEMPERATURE BELOW ABOUT 500*C. AND RECOVERING TITANIUM DIOXIDE.
Claim 2
Independent Claim
112 words
A METHOD FOR PREVENTING CORROSION AND DETERIORATION OF A METALLIC INPERFORATED REACTION ZONE WILL IN WHICH ZONE OXIDATION AT AN ELEVATED TEMPERATURE OF TITANIUM TETRACHLORIDE TO PRODUCE A TITANIUM OXIDE IS EFFECTED WHICH COMPRISES COATING THE INTERNAL SURFACE OF THE METALLIC IMPERFORATED REACTION ZONE WALL WITH A LAYER OF TITANIUM DIOXIDE HAVING AN AVERAGE THICKNESS RANGING FROM 0.1 INCH TO 0.1 INCH IN ORDER TO FORM A GLAZED SURFACE THEREON THAT PREVENTS CORROSION OF THE METALLIC SURFACE AND TIO2 CONTAMINATION AND SUBSEQUENTLY REACTING TITANIUM TETRACHLORIDE WITH OXYGEN IN THE VAPOR PHASE IN THE REACTION ZONE WHILE COOLING THE METALLIC REACTION ZONE WALL TO A TEMPERATURE BELOW ABOUT 500*C. AND RECOVERING TITANIUM DIOXIDE.
References Cited (Backward Citations)
US2395314A
Cited
US2445691A
Cited
US2670272A
Cited
US2915367A
Cited
US3073712A
Cited
US3203763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |