Patent US3015573A successfully refreshed from Google Patents.
US3015573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium dioxide pigment carrying an amine salt as dispersion aid
Assignee: Wyeth Holdings LLC
•
Filing: 1959-04-14
•
Granted: 1962-01-02
•
Expires: 1979-04-14
Abstract
No abstract record available.
Inventors
- 👤 Myron L Myers
- 👤 Walter R Whately
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3669; C01; C01P; C01P2004/00; C01P2004/50; C01P2006/00; C01P2006/22; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
DRY TITANIUM DIOXIDE PIGMENT PARTICLES HAVING ADSORBED THEREON A SMALL BUT EFFECTIVE AMOUNT OF A WATERSOLUBLE SALT OF A WATER-SOLUBLE TERITARY AMINE WITH AN ORGANIC ACID HAVING A SOLUBILITY BETWEEN 1/20% AND 2% BY WEIGHT IN WATER AT 20*C. AS AGENT IMPROVING THE DISPERSIBILITY OF SAID PARTICLES IN WATER AND IN HYDROPHOBIC ALKYD RESINS.
Claim 2
Dependent Claim
54 words
DRY TITANIUM DIOXIDE PIGMENT PARTICLES HAVING ADSORBED THEREON A SMALL BUT EFFECTIVE AMOUNT OF A WATERSOLUBLE SALT OF A WATER-SOLUBLE TERITARY AMINE WITH AN ORGANIC ACID HAVING A SOLUBILITY BETWEEN 1/20% AND 2% BY WEIGHT IN WATER AT 20*C. AS AGENT IMPROVING THE DISPERSIBILITY OF SAID PARTICLES IN WATER AND IN HYDROPHOBIC ALKYD RESINS.
References Cited (Backward Citations)
FR780799A
Cited
US2160119A
Cited
US2305379A
Cited
US2457591A
Cited
US2819174A
Cited
US2852406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |