US3249454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic dispersants for organic pigments in liquid organic systems
Assignee: Monsanto Co
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Filing: 1964-06-04
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Granted: 1966-05-03
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Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Charles R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; C08F; C08F8/00; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C08J2335/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS FOR PREPARING DISPERSION OF INSOLUBLE ORGANIC PIGMENTS IN A MEDIUM CONSISTING OF LIQUID ORGANIC MEDIUM; THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE LIQUID ORGANIC MEDIUM A TERTARY ALKYL AMMONIUM SALT OF AN ESTER OF AN OLEFIN-MALEIC ANHYDRIDE COPOLYMER IN THE AMOUNT OF 0.1-7.0 WEIGHT PERCENT BASED ON THE WEIGHT OF THE ORGANIC PIGMENT DISPERSED THEREIN; SAID TERTIARY ALKYL AMMONIUM SALT OF THE ESTER OF AN OLEFINMALEIC ANHYDRIDE COPOLYMER HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT OF UP TO ABOUT 10,000 AND HAVING IN ITS STRUCTURE RECURRING GROUPS OF THE FORMULAE:
Claim 2
Dependent Claim
92 words
IN A PROCESS FOR PREPARING DISPERSION OF INSOLUBLE ORGANIC PIGMENTS IN A MEDIUM CONSISTING OF LIQUID ORGANIC MEDIUM; THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE LIQUID ORGANIC MEDIUM A TERTARY ALKYL AMMONIUM SALT OF AN ESTER OF AN OLEFIN-MALEIC ANHYDRIDE COPOLYMER IN THE AMOUNT OF 0.1-7.0 WEIGHT PERCENT BASED ON THE WEIGHT OF THE ORGANIC PIGMENT DISPERSED THEREIN; SAID TERTIARY ALKYL AMMONIUM SALT OF THE ESTER OF AN OLEFINMALEIC ANHYDRIDE COPOLYMER HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT OF UP TO ABOUT 10,000 AND HAVING IN ITS STRUCTURE RECURRING GROUPS OF THE FORMULAE:
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |