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US3634479A Expired / Lapsed US ⏱️ 0.0 years remaining

Tin-oxygen-phosphorous bond compounds

Assignee: Dow Chemical Co
•
Filing: 1970-09-08
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Granted: 1972-01-11
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Expires: 1990-09-08
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Abstract

Abstract NEW INORGANIC POLYMERS HAVING TIN-OXYGEN-PHOSPHORUS BONDING AND THE METHOD OF PREPARING THE SAME ARE TAUGHT. THE NEW COMPOUNDS ARE PREPARED BY CONTACTING A TIN SOURCE MATERIAL WITH A PHOSPHORUS COMPOUND CHARACTERIZED AS HAVING ONE PHOSPHORYL MOIETY ($P---O) WHEREIN THE PHOSPHORUS ATOM IS PARTIALLY DOUBLE BONDED TO AS OXYGEN ATOM AND ALSO HAS AT LEAST ONE LABILE GROUP BONDED THERETO. THE POLYMERS HAVE ONE COORIDINATE BOND BETWEEN THE TIN-OXYGEN AND PHOSPHOROUS ATOMS. THE INORGANIC POLYMERS ARE USEFUL FOR PREPARING PROTECTIVE FILMS, LUBRICANTS, HYDRAULIC FLUIDS, AS A STABILIZER AND FLAME RETARDANT ADDITIVE IN PLASTICS, AND ARE BIOLOGICALLY ACTIVE AND CAN BE EMPLOYED FOR INSECTICIDES, HERBICIDES AND THE LIKE.

Inventors

  • 👤 Richard E Ridenour
  • 👤 Edward E Flagg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 17:28
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14

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) 1975-01-10 1975-07-12 1976-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-10 1979-07-12 1980-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-10 1983-07-12 1984-01-11 $7700.00 Window Closed / Lapsed

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