Alberto Ravagni, Rüdiger Nass, Helmut Schmidt, Bernhard Walter: Process for producing shrinkage-matched ceramic composites. Institut Fuer Neue Materialien gemeinnuetzige, Oblon Spivak McClelland Maier & Neustadt P C, June 10, 2003: US06576182 (73 worldwide citation)

A process for producing a composite, containing at least one shrinkage-matched ceramic layer, wherein a starting material for the ceramic layer(s) has shrinkage behavior on sintering which is matched to remaining layer(s), and which is selected such that the ceramic-forming constituent of the same c ...

Robert Drumm, Christian Goebbert, Kai Gossmann, Ralph Nonninger, Helmut Schmidt: Nanoscale corundum powders, sintered compacts produced from these powders and method for producing the same. Leibniz Institut fuer neue Materialien Gemeinnuetzige, Hollander Law Firm, April 4, 2006: US07022305 (62 worldwide citation)

Nanoscale corundum powders are obtained by first producing an Al2O3 precursor by adding seed crystals to an aqueous solution of an aluminium compound and adding a base and then converting the Al2O3 precursor into corundum by calcination at a high temperature. Before the calcination, the salts that a ...

Herbert Krug, Rudiger Nass, Helmut Schmidt, Lubomir Spanhel: Optical elements containing nanoscaled particles and having an embossed surface and process for their preparation. Institut Fur Neue Materialien Gemeinnutzige, Oblon Spivak McClelland Maier & Neustadt P C, February 10, 1998: US05716679 (61 worldwide citation)

Optical elements comprising a substrate and a transparent composite material layer having an embossed surface, the composite material comprising a polymer matrix having incorporated therein inorganic components in the form of nanoscaled particles, and methods of preparation thereof which comprise mi ...

Klaus Heilmann, Josef Herrmann, Claus Jessen, Helmut Schmidt, Christian Schwegmann, Michael Zimmermann: Apparatus for controlling a fluid flow. Fresenius, Henry M Feiereisen, February 3, 1998: US05713850 (60 worldwide citation)

Apparatus for controlling a fluid flow includes a housing having a first fitting for connection of a tube and at least one further fitting for detachable securement of a coupling piece of a peritoneal catheter. Accommodated in the housing is a rotary valve which is indexable in predetermined positio ...

Helmut Schmidt, Reiner Kasemann, Stefan Bruck: Coating compositions based on fluorine-containing inorganic polycondensates, their production and their use. Institut Fur Neue Materialien gemeinnutzige, Oblon Spivak McClelland Maier & Neustadt P C, July 1, 1997: US05644014 (59 worldwide citation)

A coating composition is disclosed based on polycondensates of hydrolyzable compounds in particular of Si, Al, Ti and/or Zr, whereas at least part of the non-hydrolyzable groups linked to these elements contain in average 2 to 30 fluorine atoms linked to aliphatic carbon atoms. A process for produci ...

Helmut Schmidt, Martin Menning, Gerhard Jonschker: Composite materials. Institut für Neue Materialien gemeinnützige, Heller Ehrman White & McAuliffe, September 11, 2001: US06287639 (53 worldwide citation)

A composite material is described which is characterized by a substrate and by a nanocomposite which is in functional contact with the substrate and is obtainable by surface modification of

Helmut Schmidt, Herbert Krug, Peter W Oliveira, Stefan Sepeur: Optical components with a graded-index structure, and method of manufacturing such components. Institut für Neue Materialien gemeinnützige, Heller Erhman White & McAuliffe, May 22, 2001: US06236493 (51 worldwide citation)

Optical components have a material-distribution gradient due to nanometer-size particles embedded in a solid matrix. The components are manufactured by forming a dispersion of nanometer-size particles in a liquid, curable matrix material, causing the particles to migrate in the matrix material on th ...

Helmut Schmidt, Martin Mennig, Herbert Krug: Method of producing structured inorganic layers. Institut fur Neue Materialien Gemeinnutzige, Oblon Spivak McClelland Maier & Neustadt P C, June 16, 1998: US05766680 (50 worldwide citation)

Structured inorganic layers are produced by optionally mixing a composition which is obtainable by hydrolysis and polycondensation of

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