Patents by Inventor Anna Dobrowolska

Anna Dobrowolska 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).

  • Security Printing
    Publication number: 20230131527
    Abstract: The use of a modified reduced indium tin oxide to provide a security image wherein the modified reduced indium tin oxide is obtained by heating indium tin oxide in a reducing atmosphere at a temperature of from 300 to 500° C.; and contacting the reduced indium tin oxide with an organophosphorus compound.
    Type: Application
    Filed: October 21, 2022
    Publication date: April 27, 2023
    Inventors: Anna DOBROWOLSKA, Aimee JACKSON, David BEDFORD, Angus WARD
  • Compositions and methods and uses relating thereto
    Patent number: 11292914
    Abstract: A material of formula (I) M1aM2bWcOd(P(O)nRm)e??(I) wherein each of M1 and M2 is independently ammonium or a metal cation; a is 0.01 to 0.5; b is 0 to 0.5; c is 1; d is 2.5 to 3; e is 0.01 to 0.75; n is 1, 2 or 3; m is 1, 2 or 3; and R is an optionally substituted hydrocarbyl group.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: April 5, 2022
    Assignee: Keeling & Walker, Limited
    Inventors: Dieter Guhl, Anna Dobrowolska
  • Compositions and Methods and Uses Relating Thereto
    Publication number: 20200095426
    Abstract: A material of formula (I) M1aM2bWcOd(P(O)nRm)e??(I) wherein each of M1 and M2 is independently ammonium or a metal cation; a is 0.01 to 0.5; b is 0 to 0.5; c is 1; d is 2.5 to 3; e is 0.01 to 0.75; n is 1, 2 or 3; m is 1, 2 or 3; and R is an optionally substituted hydrocarbyl group.
    Type: Application
    Filed: September 18, 2019
    Publication date: March 26, 2020
    Inventors: Dieter Guhl, Anna Dobrowolska