US2647094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment pastes comprising a pigment and a salt of a copolymer of styrene and a maleic half-ester
Assignee: Monsanto Chemicals Ltd
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Filing: 1950-08-19
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Granted: 1953-07-28
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Expires: 1970-08-19
Abstract
No abstract record available.
Inventors
- 👤 Frank J Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PIGMENT PASTE COMPRISING WATER, 100 PARTS OF A PULVERULENT WATER-INSOLUBLE PIGMENT AND FROM 1 TO 50 PARTS OF A SALT PREPARED BY NEUTRALIZING A COPOLYMER OF STYRENE AND A HALF-ESTER OF MALEIC ACID WITH A COMPOUND TAKEN FROM THE GROUP CONSISTING OF AMMONIA, MORPHOLINE AND ALKYL AMINES WHICH ARE VOLATILE AT TEMPERATURES BELOW 100* C., THE ESTER GROUPS IN SAID HALF-ESTER CONSISTING OF A MIXTURE OF METHYL GROUPS AND SECONDARY BUTYL GROUPS, THE RATIO OF METHYL GROUPS TO SECONDARY BUTYL GROUPS VARYING FROM 11:89 TO 48:52 MOL PERCENT.
Claim 2
Dependent Claim
89 words
A PIGMENT PASTE COMPRISING WATER, 100 PARTS OF A PULVERULENT WATER-INSOLUBLE PIGMENT AND FROM 1 TO 50 PARTS OF A SALT PREPARED BY NEUTRALIZING A COPOLYMER OF STYRENE AND A HALF-ESTER OF MALEIC ACID WITH A COMPOUND TAKEN FROM THE GROUP CONSISTING OF AMMONIA, MORPHOLINE AND ALKYL AMINES WHICH ARE VOLATILE AT TEMPERATURES BELOW 100* C., THE ESTER GROUPS IN SAID HALF-ESTER CONSISTING OF A MIXTURE OF METHYL GROUPS AND SECONDARY BUTYL GROUPS, THE RATIO OF METHYL GROUPS TO SECONDARY BUTYL GROUPS VARYING FROM 11:89 TO 48:52 MOL PERCENT.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |