US3337358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing a pigment from titanium dioxide and zinc oxide
Assignee: Individual
•
Filing: 1963-12-10
•
Granted: 1967-08-22
•
Expires: 1983-12-10
Abstract
No abstract record available.
Inventors
- 👤 Vossen Jacobus Carolu Antonius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0081; C09C1/0084; C01; C01P; C01P2006/00; C01P2006/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR THE PRODUCTION OF A SUBSTANTIALLY NONCHALKING ZINC TITNTE COMPRISING RACTING WITH TITANIUM DIOXIDE AND IN DRY STATE ZINC OXIDE IN THE FORM OF HIGHLY DEVELOPED CICULAR SULPHATED ZINC OXIDE WITH A SULPHUR CONTENT OF AT LEAST 0.1% IN THE FORM OF SO3 AND AT LEAST 0.04% S BY HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF FROM 500-1000*C. UNTIL NO MORE THAN 5% FREE ZINC OXIDE REMAINS IN THE MIXTURE, THE MOL RATIO OF TITANIUM DIOXIDE TO ZINC OXIDE BEING IN THE RANGE OF ABOUT .45 -1.1:1.0, SAID ACICULAR ZINC OXIDE BEING IN THE FORM OF NEEDLES OF APPROXIMATELY 5-8 MICRONS LENGTH.
Claim 2
Dependent Claim
105 words
A PROCESS FOR THE PRODUCTION OF A SUBSTANTIALLY NONCHALKING ZINC TITNTE COMPRISING RACTING WITH TITANIUM DIOXIDE AND IN DRY STATE ZINC OXIDE IN THE FORM OF HIGHLY DEVELOPED CICULAR SULPHATED ZINC OXIDE WITH A SULPHUR CONTENT OF AT LEAST 0.1% IN THE FORM OF SO3 AND AT LEAST 0.04% S BY HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF FROM 500-1000*C. UNTIL NO MORE THAN 5% FREE ZINC OXIDE REMAINS IN THE MIXTURE, THE MOL RATIO OF TITANIUM DIOXIDE TO ZINC OXIDE BEING IN THE RANGE OF ABOUT .45 -1.1:1.0, SAID ACICULAR ZINC OXIDE BEING IN THE FORM OF NEEDLES OF APPROXIMATELY 5-8 MICRONS LENGTH.
References Cited (Backward Citations)
US1750287A
Cited
US2021990A
Cited
US2200873A
Cited
US2253551A
Cited
US2379019A
Cited
BE583236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |