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US3708446A Expired / Lapsed US ⏱️ 0.0 years remaining

Graft copolymers of xanthomonas hydrophilic colloid and acrylic monomer

Assignee: Kelco Co
•
Filing: 1971-03-24
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Granted: 1973-01-02
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Expires: 1991-03-24
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Abstract

Abstract GRAFT COPOLYMERS OF A XANTHOMONAS HYDROPHILIC COLLOID WITH AN ACRYLIC MONOMER. METHOD OF MAKING GRAFT COPOLYMERS BY TREATING A XANTHOMONAS HYDROPHILIC COLLOID AND AN ACRULIC MONOMER IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A CERIC SALT WHICH IS SOLUBLE IN THE ACID CORRESPONDING TO THE ACID ANION IN THE CERIC SALT. THE CERIC SALT IS ADDED IN THE FORM OF A SOLUTION IN THE ACID CORRESPONDING TO THE ACID ANION OF THE SALT AND THE COPOLYMERIZATION IS CARRIED OUT UNDER A PROTECTIVE ATMOSPHERE TO EXCLUDE OXYGEN. THE COPOLYMERIZATION MAY BE CARRIED OUT IN A FERMENTATION BEER CONTAINING A XANTHOMONAS HYDROPHILIC COLLOID AS PRODUCED BY THE GROWTH OF XANTHOMONAS BACTERIA IN THE FERMENTATION MEDIUM.

Inventors

  • 👤 D Pettitt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 13:58
CPC Classifications
C; C08; C08F; C08F251/00; C08B; C08B37/00; C08B37/0006; C08B37/0024; C08B37/0033; C08F20/00; C08F20/62

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) 1976-01-02 1976-07-03 1977-01-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-02 1980-07-03 1981-01-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-02 1984-07-03 1985-01-02 $7700.00 Window Closed / Lapsed

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