Patent US2966076A successfully refreshed from Google Patents.
Patent US3198647A successfully refreshed from Google Patents.
US3198647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated pigments and process for modifying the surface of pigments
Assignee: Quaker Chemical Corp
•
Filing: 1961-04-19
•
Granted: 1965-08-03
•
Expires: 1981-04-19
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/10; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PIGMENT PROVIDED WITH A SURFACE COATING OF AN AMINE MODIFIED POLYACETAL REACTION PRODUCT MADE UNDER ACIDIC CONDITIONS AND AT REFLUX TEMPERATURES OF A SALT JOF AN AMILNO ALCOHOL CONTAINING AT LEAST TWO HYDROXY GROUPS, AN ALKYLENE DIOL, AND AN ALDEHYDE, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF AMINE SALTS AND QUATERNARY AMMONIUM SALTS OF STRONG ACIDS AND SAID ALDEHYDE CONTAINING NOT MORE THAN EIGHT CARBON ATOMS IN MONOMERIC FORM, SAID REACTION PRODUCT HAVING AT LEAST TWO ALDEHYDE UNITS AND AT LEAST TWO POLYHYDRIC ALCOHOL UNITS PER MOLECULE.
Claim 2
Dependent Claim
90 words
A PIGMENT PROVIDED WITH A SURFACE COATING OF AN AMINE MODIFIED POLYACETAL REACTION PRODUCT MADE UNDER ACIDIC CONDITIONS AND AT REFLUX TEMPERATURES OF A SALT JOF AN AMILNO ALCOHOL CONTAINING AT LEAST TWO HYDROXY GROUPS, AN ALKYLENE DIOL, AND AN ALDEHYDE, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF AMINE SALTS AND QUATERNARY AMMONIUM SALTS OF STRONG ACIDS AND SAID ALDEHYDE CONTAINING NOT MORE THAN EIGHT CARBON ATOMS IN MONOMERIC FORM, SAID REACTION PRODUCT HAVING AT LEAST TWO ALDEHYDE UNITS AND AT LEAST TWO POLYHYDRIC ALCOHOL UNITS PER MOLECULE.
References Cited (Backward Citations)
US2366738A
Cited
US2211323A
Cited
US2379237A
Cited
US2413275A
Cited
US2786081A
Cited
US2785947A
Cited
US2785996A
Cited
US2870097A
Cited
US2895923A
Cited
US2902470A
Cited
US2905721A
Cited
US3067053A
Cited
US3024209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |