US2776267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical pigments and method of preparing same
Assignee: Interchemical Corp
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Filing: 1951-11-17
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Granted: 1957-01-01
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Expires: 1971-11-17
Abstract
No abstract record available.
Inventors
- 👤 Weber Ira
- 👤 Julio H Basto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006; C09B67/0061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PRODUCING A SHPHERICAL PIGMENT WHICH CONSISTS IN PREPARING A WATER-IN-OIL EMULSION BY DISPERSING A COLORED AQUEOUS SOLUTION OF A THERMOSETTING AMINOPLAST RESIN WHICH IS A CONDENSATE BETWEEN FORMALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF UREA, BIURET, THIOUREA, CYANURIC ACID, GUANIDINE, GUANYL UREA, CYANURAMIDE AND DICYANIDIAMIDE, INTO A VOLATILE, WATER-IMMISCIBLE ORGANIC SOLVENT, HEATING THE EMULSION WHILE STIRRING TO INSOLUBILIZE THE AMINOPLAST RESINT THE FORM OF DISPERSED PARTICLES AND TO INCORPORATE THE COLORING MATTER THEREIN, SEPARATING THE SAID PARTICLES FROM THE LIQUID MEDIA AND DRYING THEM TO A FREE FLOWING PRODUCT.
Claim 2
Independent Claim
94 words
THE METHOD OF PRODUCING A SHPHERICAL PIGMENT WHICH CONSISTS IN PREPARING A WATER-IN-OIL EMULSION BY DISPERSING A COLORED AQUEOUS SOLUTION OF A THERMOSETTING AMINOPLAST RESIN WHICH IS A CONDENSATE BETWEEN FORMALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF UREA, BIURET, THIOUREA, CYANURIC ACID, GUANIDINE, GUANYL UREA, CYANURAMIDE AND DICYANIDIAMIDE, INTO A VOLATILE, WATER-IMMISCIBLE ORGANIC SOLVENT, HEATING THE EMULSION WHILE STIRRING TO INSOLUBILIZE THE AMINOPLAST RESINT THE FORM OF DISPERSED PARTICLES AND TO INCORPORATE THE COLORING MATTER THEREIN, SEPARATING THE SAID PARTICLES FROM THE LIQUID MEDIA AND DRYING THEM TO A FREE FLOWING PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |