Patents by Inventor Gerhard Jonschker

Gerhard Jonschker 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: 6017389
    Abstract: Thin SiO.sub.2 films can be produced by hydrolysis and condensation ofa) 40 to 100% by weight of one or more silanes of general formula (I)R.sub.x --Si--A.sub.4-x (I)in which the groups A are identical or different and stand for hydroxyl groups or hydrolytically separable groups, the groups R are identical or different and stand for hydrolytically non-separable groups, x has the value 0, 1, 2 or 3, x being not less than 1 for 70% by moles of said silanes;b) optionally in the presence of 0 to 50% by weight of colloidal SiO.sub.2 and/orc) 0 to 10% by weight of organic binder.The viscous sol thus obtained is worked into a gel film which is heat-treated.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: January 25, 2000
    Assignee: Institute fuer neue Materialen gemeinnuetzige GmbH
    Inventors: Helmut Schmidt, Martin Mennig, Gerhard Jonschker, Navin Suyal
  • Patent number: 5998504
    Abstract: The present invention relates to colloidal metal oxides having blocked isocyanate groups, which are based on the reaction product ofA) blocked isocyanate group-containing silanes corresponding to formula (I) ##STR1## wherein R represents hydrogen or an organic group having 1 to 40 carbon atoms,X, Y and Z represent identical or different organic groups having 1 to 30 carbon atoms which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is a C.sub.1 -C.sub.4 -alkoxy group,Q represents an organic group which contains at least one isocyanate group reacted with a blocking agent andn is 2, 3 or 4 withB) colloidal metal oxides selected from Al, Si, Ti, Ta, W, Hf, Zr, Sn and Y.The present invention also relates to the use of modified metal oxides, either alone or in combination with compounds containing at least two isocyanate-reactive groups, for the preparation of optionally expanded polyurethane plastics, lacquers or coating agents.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: December 7, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Groth, Claus Kobusch, Lutz Schmalstieg, Lothar Puppe, Theodor Engbert, Manfred Bock, Gerhard Jonschker
  • Patent number: 5910522
    Abstract: The composite adhesive for optical and opto-electronic applications contains the following:a) transparent polymers and/or polymerizable oligomers and/or monomers suitable for use as adhesive,b) nanoscale inorganic particles,c) optionally, compounds for the surface modification of said inorganic particles, andd) optionally, a crosslinking initiator.The composite adhesive is suitable for connecting individual components of optical or opto-electronic elements and for constructing such elements.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: June 8, 1999
    Assignee: Institut fur Neue Materialien gemeinnutzige GmbH
    Inventors: Helmut Schmidt, Martin Mennig, Gerhard Jonschker, Volker Gerhard
  • Patent number: 5731091
    Abstract: To produce functional vitrous, preferably colored or colloid-dyed layers, a composition produced by hydrolysis and polycondensation of(A) at least on hydrolyzable silane of general formula (I)SiX.sub.4 (I)wherein the radicals X are the same or different and represent hydrolyzable groups or hydroxy groups, or an oligomer derived therefrom, and(B) at least one organosilane of general formula (II)R.sup.1.sub.a R.sup.2.sub.b SiX.sub.(4-a-b) (II)wherein R.sup.1 is a non-hydrolyzable radical, R.sup.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: March 24, 1998
    Assignee: Institut Fuer Neue Materialien Gemeinnuetzige GmbH
    Inventors: Helmut Schmidt, Martin Mennig, Thomas Burkhart, Claudia Fink-Straube, Gerhard Jonschker, Mike Schmitt, Annette Bauer
  • Patent number: 5716424
    Abstract: Described is a process for the manufacture of glass substrates with improved long-term stability at raised temperatures, in which process a glass substrate is provided with a coating, this coating being prepared from a composition, which was obtained through hydrolysis and condensation of a compound that was dissolved in a solvent and belonged to at least one element from the group Si, Al, Ti and Zr and/or a suitable precondensate, optionally in combination with compounds, which are soluble in the reaction medium, of at least one element from the group of alkali metals, alkali earth metals, and boron. After the coating composition is deposited, the coating obtained thus is heat treated. The process is characterized in that the coating is not completely compacted.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: February 10, 1998
    Assignee: Institut fur Neue Materialien Gemeinnutzige GmbH
    Inventors: Martin Mennig, Gerhard Jonschker, Helmut Schmidt