US3017414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment production
Assignee: EIDP Inc
•
Filing: 1959-05-20
•
Granted: 1962-01-16
•
Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 John W Minnich
- 👤 Ronald L Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:53
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B48/00; C09B67/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A COLORED PIGMENT SELECTED FROM THE GROUP CONSISTING OF PHTHALOCYAMINE PIGMENTS AND QUINACRIDONE PIGMENTS WHICH COMPRISES DRY MILLING SAID COLORED PIGMENT IN A MILLING APPARATUS HAVING AN ATTRITION AND SHEARING ACTION, THEREAFTER CONTACTING SAID DRY-MILLED PIGMENT WITH AN ORGANIC LIQUID IN WATER EMULSION WHEREIN THE LIQUID IS SELECTED FROM THE GROUP CONSISTING OF NITROBENZENE, BENZONITRILE, UNSUBSTITUTED AROMATIC HYDROCARBONS, CHLORINATED AROMATIC HYDROCARBONS, AND CHLORINATED ALIPHATIC HYDROCARBONS, BOILING BETWEEN ABOUT 100* C.-250* C., AND SUBSEQUENTLY REMOVING THE ORGANIC LIQUID THE PIGMENT BY STEAM DISTILLATION.
Claim 2
Dependent Claim
90 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A COLORED PIGMENT SELECTED FROM THE GROUP CONSISTING OF PHTHALOCYAMINE PIGMENTS AND QUINACRIDONE PIGMENTS WHICH COMPRISES DRY MILLING SAID COLORED PIGMENT IN A MILLING APPARATUS HAVING AN ATTRITION AND SHEARING ACTION, THEREAFTER CONTACTING SAID DRY-MILLED PIGMENT WITH AN ORGANIC LIQUID IN WATER EMULSION WHEREIN THE LIQUID IS SELECTED FROM THE GROUP CONSISTING OF NITROBENZENE, BENZONITRILE, UNSUBSTITUTED AROMATIC HYDROCARBONS, CHLORINATED AROMATIC HYDROCARBONS, AND CHLORINATED ALIPHATIC HYDROCARBONS, BOILING BETWEEN ABOUT 100* C.-250* C., AND SUBSEQUENTLY REMOVING THE ORGANIC LIQUID THE PIGMENT BY STEAM DISTILLATION.
References Cited (Backward Citations)
GB469139A
Cited
US2282006A
Cited
US2327472A
Cited
US2556726A
Cited
US2556727A
Cited
US2645643A
Cited
US2833782A
Cited
US2857400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |