US2586188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pigment coloring
Assignee: Imperial Paper and Color Corp
•
Filing: 1947-06-24
•
Granted: 1952-02-19
•
Expires: 1967-06-24
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Van Wirt
- 👤 George F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:14
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE METHOD OF PRODUCING A COLORED SURFACE ON AN ARTICLE WHICH COMPRISES APPLYING TO THE ARTICLE A THICKENED AQUEOUS PIGMENT PASTE WHICH TO THE PIGMENT PASTE ON THE ARTICLE AN AQUEOUS DISPERSION OF A WATER-DISPERSIBLE RESIN OF THE GROUP CONSISTING OF MELANIME-FORMALDEHYDE AND UREA-FORMALDEHYDE, SAID RESIN BEING CATIONIC, THE CATIONIC RESIN HAVING BEEN PRODUCED BY TEMPORARILY SUBJECTING THE RESIN IN THE PRSENCE OF TRIETHANOLAMINE TO A PH OF AT LEAST 1.5 WITH ACID AND THEN BUFFERING THE CHARGED RESIN TO A PH OF ABOUT 6, AND HEAT-TREATING THERESIN APPLIED TO THE ARTICLE TO CURE THE RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |