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US3264242A
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Aqueous dispersions containing alkylated diphenyloxidedisulfonic acid and a non-ionic surface active agent
Assignee: Dow Chemical Co
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Filing: 1961-10-03
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Granted: 1966-08-02
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Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Teot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN AQUEOUS DISPERSION OF SOLIDS CONTAINING A COMPOSITION COMPRISING ONE PART BY WEIGHT OF AN ALKALI METAL SALT OF ALKYLATED DIPHENYL OXIDE DISULFONIC ACID HAVING FROM 8 TO 18 CARBON ATOMS IN EACH ALKYL MOIETY AND AN AVERAGE OF FROM 1.8 TO 2.2 SULFONIC ACID MOIETIES PER DIPHENYL OXIDE RADICAL AND FROM 1/9 TO 9 PARTS BY WEIGHT OF A NONIONIC SURFACE-ACTIVE AGENT.
Claim 2
Dependent Claim
63 words
AN AQUEOUS DISPERSION OF SOLIDS CONTAINING A COMPOSITION COMPRISING ONE PART BY WEIGHT OF AN ALKALI METAL SALT OF ALKYLATED DIPHENYL OXIDE DISULFONIC ACID HAVING FROM 8 TO 18 CARBON ATOMS IN EACH ALKYL MOIETY AND AN AVERAGE OF FROM 1.8 TO 2.2 SULFONIC ACID MOIETIES PER DIPHENYL OXIDE RADICAL AND FROM 1/9 TO 9 PARTS BY WEIGHT OF A NONIONIC SURFACE-ACTIVE AGENT.
References Cited (Backward Citations)
US2081876A
Cited
US2809122A
Cited
US2855367A
Cited
GB790070A
Cited
US3000832A
Cited
US2802799A
Cited
US2943058A
Cited
US2854477A
Cited
US2990375A
Cited
US3067053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |