One-step oxidation of wet-process phosphoric acid

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United States of America Patent

PATENT NO 6911191
APP PUB NO 20040081608A1
SERIAL NO

10281065

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Abstract

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A one-step method for production of green-colored, stabilized wet-process phosphoric acid in which black-colored, wet-process phosphoric acid containing incidental metallic impurities and a carbonaceous content of less than 1000 ppm is oxidized to produce a green-colored liquid having a carbonaceous content less than 500 ppm. A typical green-colored liquid product produced by this one-step process has an emf of greater than 800 mv.

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AGRIUM U S INC4582 SOUTH ULSTER STREET SUITE 1700 DENVER CO 80237

International Classification(s)

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  • 2002 Application Filing Year
  • C01B Class
  • 659 Applications Filed
  • 244 Patents Issued To-Date
  • 37.03 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2002200320042005200620072008200920102011201220130255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alcorn, Russell Dean Soda Springs, ID 1 1
Carpenter, Bryce Richard Soda Springs, ID 1 1
Neuman, Daniel Carl Soda Springs, ID 1 1

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  • C01B Class
  • 7.22 % this patent is cited more than
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges403441014115533201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 70100 +020406080100120140160180200220240260280300320340360380

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