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US3741922A Expired / Lapsed US ⏱️ 0.0 years remaining

Aqueous latex paint thickening composition

Assignee: Dow Chemical Co
•
Filing: 1971-04-22
•
Granted: 1973-06-26
•
Expires: 1991-04-22
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Abstract

Abstract THIS APPLICATION DISCLOSES THICKENERS FOR AQUEOUS POLYMER LATEX COMPOSITION, THE THICKENERS CONSISTING OF AN INTIMATE BLEND OF CELLULOSE ETHERS, SAID BLEND HAVING A VISCOSITY IN 2 PERCENT AQUEOUS SOLUTION AT 2/*C. OF FROM 1000 TO 2/,000 CENTIPOISES, SAID BLEND CONSISTING OF ONE WATER-SOLUBLE HYDROXYALKYL ALKYL CELLULOSE ETHER HAVING FROM 2 TO 4 CARBON ATOMS IN THE HYDROXYALKYL GROUP AND 1 TO 2 CARBONS IN THE ALKYL GROUP AND HAVING A VISCOSITY OF A 2 PERCENT AQUEOUS SOLUTION AT 2/*C. OF GREATER THAN 10000 CENTIPOISES AND ANOTHER WATER-SOLUBLE HYDROXYALKYL ALKYL CELLULOSE ETHER HAVING FROM 2 TO 4 CARBONS IN THE HYDROXYALKYL GROUP AND 1 TO 2 CARBONS IN THE ALKYL GROUP AND HAVING A VISCOSITY IN 2 PERCENT AQUEOUS SOLUTION AT 20*C. OF LESS THAN 1000 CENTIPOISES.

Inventors

  • 👤 R Glomski
  • 👤 A Savage

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:24
CPC Classifications
C; C09; C09D; C09D157/00; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/193; C09D101/00; C09D101/02; C09D101/08; C09D101/26; C09D101/28; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/10; C09D127/00; C09D127/02; C09D127/04; C09D131/00; C09D131/02; C09D133/00; C09D133/04; C09D133/06; C09D7/00; C09D7/40; C09D7/43; C09D7/44; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L1/284; C08L2205/00; C08L2205/02

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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