Patent US3748164A successfully refreshed from Google Patents.
US3748164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel pigmentation method for organic pigments
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1971-06-17
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Granted: 1973-07-24
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Expires: 1991-06-17
Abstract
Abstract A METHOD FOR PRODUCING A PIGMENT BY CONDITIONING A CRUDE ORGANIC PIGMENT, WHICH COMPRISES GRINDING A MIXTURE OF A CRUDE ORGANIC PIGMENT AND AN AMINOPLAST AS A TACKIFYING AGENT IN THE PRESENCE OF AN INORGANIC OR ORGANIC SALT AS A GRINDING AGENT IN A DOUBLE-ARM DISPERSION MIXER, IN THE ABSENCE OR PRESENCE OF AT LEAST ONE ADDITIVE SELECTED FROM THE GROUP CONSISTING OF WATER, ALCOHOLS, ALIPHATIC HYDROCARBONS, ALIPHATIC HALOHYDROCARBONS, AROMATIC HYDROCARBONS, AROMATIC HALOHYDROCARBONS, SURFACE ACTIVE AGENTS AND SOLID RESINS.
Inventors
- 👤 T Akamatsu
- 👤 Y Kuwahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C09; C09B; C09B67/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |