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 ...

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 (64 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 ...

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 ...

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 (52 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