The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2013
Filed:
Oct. 06, 2008
Ruediger Wissemborski, Gau-Algesheim, DE;
Gunnar Buehler, Nickenich, DE;
Joachim Markmann, Dorsheim, DE;
David Kuemmet, Budenheim, DE;
Ruediger Wissemborski, Gau-Algesheim, DE;
Gunnar Buehler, Nickenich, DE;
Joachim Markmann, Dorsheim, DE;
David Kuemmet, Budenheim, DE;
Chemische Fabrik Budenheim KG, Budenheim, DE;
Abstract
Iron(III) orthophosphate of the general formula FePO×nHO (n≦2.5), prepared by a process in which iron(II)-, iron(III)- or mixed iron(II, III) compounds selected from among hydroxides, oxides, oxidehydroxides, oxide hydrates, carbonates and hydroxidecarbonates are reacted with phosphoric acid having a concentration in the range from 5% to 50%, any iron(II) present after the reaction is converted into iron(III) by addition of an oxidant and solid iron(III) orthophosphate is separated off from the reaction mixture.