Patents by Inventor WOJCIECH AMBROZIAK

WOJCIECH AMBROZIAK 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).

  • Methods for encapsulation and microcapsules produced thereby
    Patent number: 10478401
    Abstract: The invention relates to methods for encapsulating a material comprising the steps of: (a) providing an aqueous solution or suspension of the material that is to be encapsulated, (b) warming the aqueous solution or suspension to a temperature that is sufficient to enable dissolution of a first biocompatible polymer in the aqueous solution or suspension without adversely affecting the properties of the material to be encapsulated, (c) dissolving the first biocompatible polymer in the aqueous solution or suspension, (d) de-aerating the solution or suspension obtained in step (c), (e) emulsifying the solution or suspension obtained in (d) in a biocompatible oil comprising a surfactant to create microdroplets, and (f) hardening the microdroplets by dropwise addition of an aqueous solution comprising Zn2+ ions and a second biocompatible polymer to form microcapsules; the invention further relates to microcapsules obtained by methods of the invention and their uses.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: November 19, 2019
    Assignee: Proteon Pharmaceuticals S.A.
    Inventors: Elzbieta Gorecka, Jaroslaw Dziadek, Wojciech Ambroziak
  • METHODS FOR ENCAPSULATION AND MICROCAPSULES PRODUCED THEREBY
    Publication number: 20160279070
    Abstract: The invention relates to methods for encapsulating a material comprising the steps of: (a) providing an aqueous solution or suspension of the material that is to be encapsulated, (b) warming the aqueous solution or suspension to a temperature that is sufficient to enable dissolution of a first biocompatible polymer in the aqueous solution or suspension without adversely affecting the properties of the material to be encapsulated, (c) dissolving the first biocompatible polymer in the aqueous solution or suspension, (d) de-aerating the solution or suspension obtained in step (c), (e) emulsifying the solution or suspension obtained in (d) in a biocompatible oil comprising a surfactant to create microdroplets, and (f) hardening the microdroplets by dropwise addition of an aqueous solution comprising Zn2+ ions and a second biocompatible polymer to form microcapsules; the invention further relates to microcapsules obtained by methods of the invention and their uses.
    Type: Application
    Filed: October 27, 2014
    Publication date: September 29, 2016
    Applicant: PROTEON PHARMACEUTICALS S.A.
    Inventors: ELZBIETA GORECKA, JAROSLAW DZIADEK, WOJCIECH AMBROZIAK