Patents by Inventor Antje Kynast

Antje Kynast has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lead-free piezoceramic material based on bismuth sodium titanate (BST)
    Patent number: 11618717
    Abstract: The invention relates to a lead-free piezoceramic material based on bismuth sodium titanate (BST) having the following parent composition: x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z?0.07 or x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0<z?0.05 or x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-zBaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z<1, characterized by addition of a phosphorus-containing material in a quantity that gives a phosphorus concentration of from 100 to 2000 ppm in the piezoceramic material.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 4, 2023
    Assignee: PI CERAMIC GMBH
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann
  • Piezoceramic material with reduced lead content
    Patent number: 10910550
    Abstract: The invention relates to a piezoceramic material with reduced lead content, based on potassium sodium niobate (PSN) and having a defined parent composition. According to the invention the manner of addition of a mixture of Pb, Nb and optionally Ag and optionally Mn gives a wide sintering range together with reproducible electrical and mechanical properties of the material.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 2, 2021
    Assignee: PI CERAMIC GMBH
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann
  • LEAD-FREE PIEZOCERAMIC MATERIAL BASED ON BISMUTH SODIUM TITANATE (BST)
    Publication number: 20190322589
    Abstract: The invention relates to a lead-free piezoceramic material based on bismuth sodium titanate (BST) having the following parent composition: x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z?0.07 or x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0<z?0.05 or x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-zBaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z<1, characterized by addition of a phosphorus-containing material in a quantity that gives a phosphorus concentration of from 100 to 2000 ppm in the piezoceramic material.
    Type: Application
    Filed: January 14, 2019
    Publication date: October 24, 2019
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann
  • Lead-free piezoceramic material based on bismuth sodium titanate (BST)
    Patent number: 10246376
    Abstract: The invention relates to a lead-free piezoceramic material based on bismuth sodium titanate (BST) having the following parent composition: x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z?0.07 or x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0<z?0.05 or x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-zBaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z<1, characterized by addition of a phosphorus-containing material in a quantity that gives a phosphorus concentration of from 100 to 2000 ppm in the piezoceramic material.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: April 2, 2019
    Assignee: PI CERAMIC GMBH
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann
  • LEAD-FREE PIEZOCERAMIC MATERIAL BASED ON BISMUTH SODIUM TITANATE (BST)
    Publication number: 20160194249
    Abstract: The invention relates to a lead-free piezoceramic material based on bismuth sodium titanate (BST) having the following parent composition: x(Bi0.5Na0.5)TiO3-yBaTiO3-zSrTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z?0.07 or x(Bi0.5Na0.5)TiO3-yBaTiO3-zCaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0<z?0.05 or x(Bi0.5Na0.5)TiO3-y(Bi0.5K0.5)TiO3-zBaTiO3 where x+y+z=1 and 0<x<1, 0<y<1, 0?z<1, characterized by addition of a phosphorus-containing material in a quantity that gives a phosphorus concentration of from 100 to 2000 ppm in the piezoceramic material.
    Type: Application
    Filed: June 23, 2014
    Publication date: July 7, 2016
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann
  • PIEZOCERAMIC MATERIAL WITH REDUCED LEAD CONTENT
    Publication number: 20160190430
    Abstract: The invention relates to a piezoceramic material with reduced lead content, based on potassium sodium niobate (PSN) and having a defined parent composition. According to the invention the manner of addition of a mixture of Pb, Nb and optionally Ag and optionally Mn gives a wide sintering range together with reproducible electrical and mechanical properties of the material.
    Type: Application
    Filed: August 7, 2014
    Publication date: June 30, 2016
    Inventors: Eberhard Hennig, Antje Kynast, Michael Töpfer, Michael Hofmann