Patents Assigned to CERPOTECH AS
  • Process for the manufacture of ferroelectric materials
    Patent number: 8936731
    Abstract: A process for the preparation of a niobium compound of formula (I): D?Nb?E?O3-???(I) wherein D is an alkali metal (e.g. Li, Na, K, Rb, Cs and/or Fr), alkaline earth metal (such as Ba, Ca, Mg and/or Sr), La and/or Bi and may be present as a mixture of two or more metals; E is Ta, Sb and/or Fe and may be present as a mixture of two or more metals; ? is a positive number ? is a positive number ? is zero or a positive number ? is a number 0???0.5; and wherein the formula (I) has the perovskite or tungsten bronze structure; comprising spray pyrolising a solution, for example an aqueous solution, comprising metal (D) ions, Nb ions and if present, metal (E) ions.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: January 20, 2015
    Assignee: Cerpotech AS
    Inventors: Francesco Madaro, Tor Grande, MariAnn Einarsrud, Kjell Wiik
  • PROCESS
    Publication number: 20120091389
    Abstract: A process for the preparation of a niobium compound of formula (I): D?Nb?E?O3-???(I) wherein D is an alkali metal (e.g. Li, Na, K, Rb, Cs and/or Fr), alkaline earth metal (such as Ba, Ca, Mg and/or Sr), La and/or Bi and may be present as a mixture of two or more metals; E is Ta, Sb and/or Fe and may be present as a mixture of two or more metals; ? is a positive number ? is a positive number ? is zero or a positive number ? is a number 0???0.5; and wherein the formula (I) has the perovskite or tungsten bronze structure; comprising spray pyrolising a solution, for example an aqueous solution, comprising metal (D) ions, Nb ions and if present, metal (E) ions.
    Type: Application
    Filed: March 4, 2010
    Publication date: April 19, 2012
    Applicant: CERPOTECH AS
    Inventors: Francesco Madaro, Tor Grande, MariAnn Einarsrud, Kjell Wiik