US3000840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersing agents
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-12-20
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Granted: 1961-09-19
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Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 John H Johnson
- 👤 Joseph E Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/50; C; C09; C09D; C09D5/00; C09D5/02; C09D5/024; C09D5/027; D21H19/38; D21H19/40; D21H19/56; D21H19/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A COTAING COMPOSITION COMPRISING AN ORGANIC FILMFORMING BINDING AGENT, WATER, A WATER-INSOLUBEL INORGANIC PIGMENT AND A DESPERSING AGENT WHICH IS THE HALF-AMMINIUM SALT, HALF-AMIDE OF THEYLENE-MAELIC ANHYDRIDE COPOLYMER HAVING AN AVERAGE MOLECULAR WEIGHT OF LESS THAN 13,000, SAID DISPERSIN AGENT BEING PRESENT IN A QUANTITY OF FROM 0.01% TO 2.0% BY WEIGHT OF THE PIGMENT, SAID FILM-FORMING MATERIAL BEING PRESENT IN A QUANTITY OF FROM 10% TO 35% BY WEIGHT OF THE PIGMENT, AND THE TOTAL SOLIDS CONTENT OF SAID COATING COMPOSITION BEING FROM 20% TO 70% BY WEIGHT OF THE COMPOSITION.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |