US2607705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic pigment
Assignee: Interchemical Corp
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Filing: 1949-05-26
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Granted: 1952-08-19
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 Charles A Kumins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:21
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C09; C09C; C09C1/00; C09C1/10; C01; C01P; C01P2002/00; C01P2002/80; C01P2002/84; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/60; C01P2006/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
METHOD OF PREPARING A TRANSPARENT CADMIUM SULFIDE PIGMENT COMPRISING RAPIDLY REACTING A SOLUTION OF A WATER SOLUBLE CADMIUM SALT NOT EXCEEDING 2.3 MOLAR CONCENTRATION WITH A SOLUTION OF A WATER SOLUBLE ALKALI SULFIDE NOT EXCEEDING 2.3 MOLAR CONCENTRATION AT TEMPERATURE NOT EXCEEDING 90* C., SEPARATING THE PRECIPITATED CADMIUM SULFIDE FROM THE REACTION MEDIUM AND PREVENTING THE GROWTH OF PIGMENTARY AGGREGATES, BY TRANSFERRING THE PIGMENT PARTICLES TO A HYDROPHOBIC VEHICLE.
Claim 2
Dependent Claim
69 words
METHOD OF PREPARING A TRANSPARENT CADMIUM SULFIDE PIGMENT COMPRISING RAPIDLY REACTING A SOLUTION OF A WATER SOLUBLE CADMIUM SALT NOT EXCEEDING 2.3 MOLAR CONCENTRATION WITH A SOLUTION OF A WATER SOLUBLE ALKALI SULFIDE NOT EXCEEDING 2.3 MOLAR CONCENTRATION AT TEMPERATURE NOT EXCEEDING 90* C., SEPARATING THE PRECIPITATED CADMIUM SULFIDE FROM THE REACTION MEDIUM AND PREVENTING THE GROWTH OF PIGMENTARY AGGREGATES, BY TRANSFERRING THE PIGMENT PARTICLES TO A HYDROPHOBIC VEHICLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |