Patents by Inventor Johannes M. Leykauff

Johannes M. Leykauff 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).

  • Patent number: 10799429
    Abstract: The invention relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit comprising a Paste A and a Paste B, Paste A comprising water, acid-reactive inorganic filler A, phyllo silicate(s), Paste B comprising water, poly-acid, non acid-reactive filler B, optionally chelating agent. The invention also relates to a hardenable composition obtainable by combining the pastes of the kit or parts and to the use of such a composition as or for preparing a dental cement, dental filling material, dental core build up material or dental root channel filling material.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: October 13, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kai U. Claussen, Johannes M. Leykauff, Christine Lienau, Reinhold Hecht, Peter Braun, Markus Mikulla
  • Patent number: 10548819
    Abstract: The invention features a composition which can or is to be used in a dental retraction, the composition comprising liquid a liquid and a layer type 1:1 silicate mineral and a layer type 2:1 silicate mineral in a ratio from about 50/50 to 5/95 wt.-% with respect to each other. The invention also relates to a container containing the dental retraction composition and to a kit comprising parts A and B, wherein part A comprises the dental retraction composition and part B comprises at least one accessory selected from the group of applier, dental impression material, retraction cap(s), a container for storing and dispensing the composition and combinations thereof. The invention further features a process of dispensing a dental retraction composition, the process comprising the steps: providing a dental retraction composition contained in a container, placing the container in an applier, and using the applier for dispensing the dental retraction composition out of the container.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: February 4, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Andreas R. Maurer, Christoph Schulte, RĂ¼diger Hampe, Johannes M. Leykauff, Helmut Pauser
  • Publication number: 20190110960
    Abstract: The present invention relates to a hardenable dental composition comprising (A) a curable component comprising curable moieties (AC), (B) a crosslinker component as component (B) capable of crosslinking said component (A), (C) a catalyst as component (C) capable of catalyzing a crosslinking reaction of component (A) and component (B), (D) polymeric particles as filler component (D), the polymeric particles having a maximum particle size of 150 ?m or below and being composed of organic polymers, silicone elastomers or a combination or mixture thereof and preferably (E1) an inorganic filler component having a BET surface from 50 to 400 m2/g. The invention also relates to the use of a polymeric particulate filler component (D) for producing a hardenable dental composition, the hardenable dental composition being in particular useful as dental impression or dental retraction material or for dental impression or dental retraction purposes.
    Type: Application
    Filed: December 3, 2015
    Publication date: April 18, 2019
    Inventors: Andreas R. Maurer, Peter Bissinger, Christoph Schulte, Arne Thaler, Joachim W. Zech, Johann Fetz, Peter U. Osswald, Johannes M. Leykauff
  • Publication number: 20190046419
    Abstract: The invention relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit comprising a Paste A and a Paste B, Paste A comprising water, acid-reactive inorganic filler A, phyllo silicate(s), Paste B comprising water, poly-acid, non acid-reactive filler B, optionally chelating agent. The invention also relates to a hardenable composition obtainable by combining the pastes of the kit or parts and to the use of such a composition as or for preparing a dental cement, dental filling mater ial, dental core build up material or dental root channel filling material.
    Type: Application
    Filed: February 16, 2017
    Publication date: February 14, 2019
    Inventors: Kai U. Claussen, Johannes M. Leykauff, Christine Lienau, Reinhold Hecht, Peter Braun, Markus Mikulla
  • Publication number: 20160317265
    Abstract: A device for dispensing a dental paste comprises a first nozzle for delivering the paste and a second nozzle for delivering a gas stream. The device is adapted for simultaneously delivering the gas stream and the paste toward a working area. The invention helps minimizing efforts in a dental treatment and maximizing the quality of that dental treatment.
    Type: Application
    Filed: December 8, 2014
    Publication date: November 3, 2016
    Applicant: 3M Innovative Properties Company
    Inventors: Andreas R. Maurer, Christoph Schulte, Helmut Pauser, Ruediger Hampe, Johannes M. Leykauff, Marc Peuker
  • Publication number: 20120077142
    Abstract: The invention features a composition which can or is to be used in a dental retraction, the composition comprising liquid a liquid and a layer type 1:1 silicate mineral and a layer type 2:1 silicate mineral in a ratio from about 50/50 to 5/95 wt.-% with respect to each other. The invention also relates to a container containing the dental retraction composition and to a kit comprising parts A and B, wherein part A comprises the dental retraction composition and part B comprises at least one accessory selected from the group of applier, dental impression material, retraction cap(s), a container for storing and dispensing the composition and combinations thereof. The invention further features a process of dispensing a dental retraction composition, the process comprising the steps: providing a dental retraction composition contained in a container, placing the container in an applier, and using the applier for dispensing the dental retraction composition out of the container.
    Type: Application
    Filed: May 24, 2010
    Publication date: March 29, 2012
    Inventors: Andreas R. Maurer, Christoph Schulte, RĂ¼diger Hampe, Johannes M. Leykauff, Helmut Pauser