Patent US3119835A successfully refreshed from Google Patents.
US3119835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning of phthalocyanine pigments
Assignee: GAF Chemicals Corp
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Filing: 1962-02-20
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Granted: 1964-01-28
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Expires: 1982-02-20
Abstract
No abstract record available.
Inventors
- 👤 Harold N Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0017; C09B67/0019
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE PROCESS FOR PRODUCING PHTHALOCYANINE PIGMENT IN A FINELY DIVIDED PHYSICAL FORM CHARACTERIZED AS A GREENISH HUE AND TINCTORIAL STABILITY IN AROMATIC SOLVENTS WHICH COMPRISES MILLING AT A TEMPERATURE OF FROM 30*C. TO 110* C. A MASS OF A CRUDE PHTHALOCYANINE PIGMENT WITH AT LEAST 2.5 PARTS SODIUM CHLORIDE PER PART OF SAID PHTHALOCYANINE PIGMENT IN THE PRESENCE OF FROM ONE-FOURTH TO ONE MOLE EQUIVALENT OF SAID PHTHALOCYANINE PIGMENT OF ANHYDROUS ACIDS SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND ACIDS CAPABLE OF GENERATING HYDROCHLORIC ACID WITH SODIUM CHLORIDE AND SUBSEQUENTLY REMOVING THE HYDROCHLORIC ACID FROM THE MILLED MASS.
Claim 2
Dependent Claim
100 words
THE PROCESS FOR PRODUCING PHTHALOCYANINE PIGMENT IN A FINELY DIVIDED PHYSICAL FORM CHARACTERIZED AS A GREENISH HUE AND TINCTORIAL STABILITY IN AROMATIC SOLVENTS WHICH COMPRISES MILLING AT A TEMPERATURE OF FROM 30*C. TO 110* C. A MASS OF A CRUDE PHTHALOCYANINE PIGMENT WITH AT LEAST 2.5 PARTS SODIUM CHLORIDE PER PART OF SAID PHTHALOCYANINE PIGMENT IN THE PRESENCE OF FROM ONE-FOURTH TO ONE MOLE EQUIVALENT OF SAID PHTHALOCYANINE PIGMENT OF ANHYDROUS ACIDS SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND ACIDS CAPABLE OF GENERATING HYDROCHLORIC ACID WITH SODIUM CHLORIDE AND SUBSEQUENTLY REMOVING THE HYDROCHLORIC ACID FROM THE MILLED MASS.
References Cited (Backward Citations)
US2765319A
Cited
US2840568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |