US3147131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating titanium dioxide pigments
Assignee: NL Industries Inc
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Filing: 1962-04-10
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Granted: 1964-09-01
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Expires: 1982-04-10
Abstract
No abstract record available.
Inventors
- 👤 Franklin L Kingsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:10
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C1/3607; C09C1/3653; C01; C01P; C01P2006/00; C01P2006/22; C01P2006/60; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A TITANIUM DIOXIDE PIGMENT HAVING IMPROVED GLOSS PROPERTIES CONSISTING ESENTIALLY OF A THOROUGHLY BLENDED MIXTURE OF SAID PIGMENT AND A COMPLEX COMPOSITION OF PERCHLORIC ACID AND AN ORGANO-NITROGEN COMPOUND, SID SISTING OF ALKYLMONOAMINES, ALKYHLDIAMINES, ALKYLTRIAMINES, ALKYLALKANOLAMINES, ARYLALKANOLAMINES, UREA, ACID AMIDES, QUATERNARY AMMONIUM HYDROXIDES, ARYLMONOAMINES, ARYLDIAMINES AND CYCLICALKYLMONOAMINES, SAID COMPOSITION CONTAINING ABOUT 1 EQUIVALENT OF PERCHLORIC ACID FOR EACH NITROGEN ATOM PRESENT IN SAID ORGANO-NITROGEN COMPOUND, SAID JCOMPOSITION CONTAINING PERCHLORIC ACID IN AMOUNT OF FROM 0.015% TO 0.3% BASED ON THE WEIGHT OF SAID PIGMENT.
References Cited (Backward Citations)
US3015573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |