US2816114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of improved organic pigments
Assignee: EIDP Inc
•
Filing: 1953-08-31
•
Granted: 1957-12-10
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ehrich Felix Frederick
- 👤 Arthur J Stratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:18
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A WATERINSOLUBLE COLORING MATERIAL COMPRISING SUBJECTING, IN THE PRESENCE OF A DISPERSING AGENT, A MIXTURE OF SAID MATERIAL AND A FINELY DIVIDED, WATER-SOLUBLE INORGANIC SALT SUSPENDED IN A SATURATED AQUEOUS SOLUTION OF SAID SALT TO HIGH ENERGY SHEAR AND IMPACT TREATMENT IMPARTED THERETO BY A SURFACE MOVING AT A HIGH RATE OF SPEED WITH RESPECT TO SAID MIXTURE.
Claim 2
Dependent Claim
66 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A WATERINSOLUBLE COLORING MATERIAL COMPRISING SUBJECTING, IN THE PRESENCE OF A DISPERSING AGENT, A MIXTURE OF SAID MATERIAL AND A FINELY DIVIDED, WATER-SOLUBLE INORGANIC SALT SUSPENDED IN A SATURATED AQUEOUS SOLUTION OF SAID SALT TO HIGH ENERGY SHEAR AND IMPACT TREATMENT IMPARTED THERETO BY A SURFACE MOVING AT A HIGH RATE OF SPEED WITH RESPECT TO SAID MIXTURE.
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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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |