Patents by Inventor Ralph Grottenmueller

Ralph Grottenmueller 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: 9991182
    Abstract: The invention relates to the use of specific organopolysilazanes as an encapsulation material for light emitting diodes (LED). The organopolysilazane polymers act as insulating filling materials and are stable over temperature and over exposure to ambient UV radiation. The encapsulating material has good thermal stability against discoloration to yellow by aging even at high temperatures which is a key factor for the long lifetime of an LED encapsulant and the LED performance.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: June 5, 2018
    Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.
    Inventors: Ralph Grottenmüller, Rosalin Karunanandan, Fumio Kita, Helmut Lenz, Dieter Wagner
  • Publication number: 20170240423
    Abstract: An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.
    Type: Application
    Filed: May 10, 2017
    Publication date: August 24, 2017
    Inventors: Takashi Fujiwara, Ralph Grottenmueller, Takashi Kanda, Tatsuro Nagahara
  • Publication number: 20160172552
    Abstract: The invention relates to the use of specific organopolysilazanes as an encapsulation material for light emitting diodes (LED). The organopolysilazane polymers act as insulating filling materials and are stable over temperature and over exposure to ambient UV radiation. The encapsulating material has good thermal stability against discoloration to yellow by aging even at high temperatures which is a key factor for the long lifetime of an LED encapsulant and the LED performance.
    Type: Application
    Filed: July 16, 2014
    Publication date: June 16, 2016
    Applicant: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Ralph GROTTENMÜLLER, Rosalin KARUNANANDAN, Fumio KITA, Helmut LENZ, Dieter WAGNER
  • Publication number: 20150004421
    Abstract: An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.
    Type: Application
    Filed: February 1, 2013
    Publication date: January 1, 2015
    Applicant: AZ ELECTRONIC MATERIALS USA CORP.
    Inventors: Takashi Fujiwara, Ralph Grottenmueller, Takashi Kanda, Tatsuro Nagahara