US3324063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture of two anionic polymeric dispersing agents one of which contains a carboxyl group
Assignee: Dow Chemical Co
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Filing: 1963-06-03
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Granted: 1967-06-06
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Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Teot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:30
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/18; C08L33/00; C08L33/02; C09; C09K; C09K23/00; C09K23/017; C09K23/018; Y; Y10; Y10S; Y10S526/00; Y10S526/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A WATER-SOLUBLE MIXTURE OF FROM 1:9 TO 9:1 WEIGHT PARTS OF (1) POLY(ALKALI METAL STYRENESULFONATE) AND (2) POLYACRYLIC ACID ALKALI METAL SALT, SAID POLYMERS HAVING A MOLECULAR WEIGHT RANGING BETWEEN 1X10**3 AND 2X10**5, SAID COMPOSITION BEING USEFUL IN REDUCING THE VISCOSITY OF AQUEOUS DISPERSIONS OF PARTICULATE WATERINSOLUBLE SOLIDS.
Claim 2
Dependent Claim
48 words
A WATER-SOLUBLE MIXTURE OF FROM 1:9 TO 9:1 WEIGHT PARTS OF (1) POLY(ALKALI METAL STYRENESULFONATE) AND (2) POLYACRYLIC ACID ALKALI METAL SALT, SAID POLYMERS HAVING A MOLECULAR WEIGHT RANGING BETWEEN 1X10**3 AND 2X10**5, SAID COMPOSITION BEING USEFUL IN REDUCING THE VISCOSITY OF AQUEOUS DISPERSIONS OF PARTICULATE WATERINSOLUBLE SOLIDS.
References Cited (Backward Citations)
US1976679A
Cited
US2612485A
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US3002940A
Cited
US3026281A
Cited
US3223663A
Cited
US3170888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |