Patents by Inventor Kai BERGNER

Kai BERGNER 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).

  • Silica-coated expanding agents and their use in cementitious systems
    Patent number: 11008256
    Abstract: The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: May 18, 2021
    Assignee: BASF SE
    Inventors: Radoslaw Kierat, Michael Klemens Mueller, Andreas Kempter, Oscar Lafuente Cerda, Kai Bergner
  • CORE-SHELL EXPANDING AGENTS AND THEIR USE IN CEMENTITIOUS SYSTEMS
    Publication number: 20200299202
    Abstract: Coated inorganic expanding agent particles comprise a core of an inorganic expanding agent and a sol/gel-formed coating comprising a mixed oxide of two or more metals and/or metalloids, in particular a mixed oxide of silicon and at least one metal and/or metalloid selected from aluminum, boron, titanium, zirconium and zinc. The coated inorganic expanding agent particles are added to cementitious systems to avoid shrinkage during hardening. The coating is effective to delay the expanding effect.
    Type: Application
    Filed: September 25, 2018
    Publication date: September 24, 2020
    Applicant: BASF SE
    Inventors: Sung Yeun CHOI, Kai BERGNER, Radoslaw KIERAT, Michael Klemens MUELLER
  • SILICA-COATED EXPANDING AGENTS AND THEIR USE IN CEMENTITIOUS SYSTEMS
    Publication number: 20190119161
    Abstract: The invention relates to a process for preparing silica-coated particles of an inorganic expanding agent, the silica-coated particles and their use. The silica-coated particles show a delayed release of the expanding agent particularly in alkaline medium and at elevated temperatures. They are therefore useful in the oil and construction industry.
    Type: Application
    Filed: April 7, 2017
    Publication date: April 25, 2019
    Inventors: Radoslaw KIERAT, Michael Klemens MUELLER, Andreas KEMPTER, Oscar LAFUENTE CERDA, Kai BERGNER