Patents by Inventor Ulrich Schaedeli
Ulrich Schaedeli 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).
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Publication number: 20150321969Abstract: Powder as propulsion powder or ignition powder for accelerating projectiles for mortar systems is based on nitrocellulose and comprises a crystalline, nitramine-based energetic material at 1-30 wt % and an inorganic muzzle flash suppressor at 0.1-10 wt %. The powder is in the form of grains, and the grains on their surface optionally have an inert plasticizing additive at not more than 1 wt %. The crystalline, nitramine-based energetic material is preferably at least one compound from the group encompassing hexogen (RDX) and octogen (HMX). The inorganic muzzle flash suppressor preferably comprises at least one compound from the group encompassing potassium nitrate and potassium sulfate.Type: ApplicationFiled: January 29, 2013Publication date: November 12, 2015Applicant: Nitrochemie Wimmis AGInventors: Ulrich SCHAEDELI, Dominik ANTENEN, Beat VOGELSANGER, Vincent GFELLER
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Publication number: 20140352566Abstract: The propulsion system for the acceleration of projectiles is based on a multi-perforated grain propellant and is composed from nitrocellulose, a crystalline energy carrier of a nitramine type and an inert plasticizing additive. The number of perforations is 2 to 6, preferably 4. The propellant grains can have round or polygonic profiles, depending on the number of perforations. The preferred grain geometry is cubic with a rectangular grain profile. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual group. The nitramine compound is present in a concentration in the range from 0 to 35% by mass, in particular in the range from 5 to 25% by mass. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present.Type: ApplicationFiled: September 15, 2011Publication date: December 4, 2014Applicant: NITROCHEMIE WIMMIS AGInventors: Ulrich Schaedeli, Dominik Antenen, Attila Vamos
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Patent number: 8353994Abstract: The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticizing additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual. The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticizing additive is present in a concentration of 1 to 5% by weight.Type: GrantFiled: May 17, 2007Date of Patent: January 15, 2013Assignee: Nitrochemie Wimmis AGInventors: Ulrich Schaedeli, Hanspeter Andres, Kurt Ryf, Dominik Antenen, Beat Vogelsanger
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Publication number: 20120138201Abstract: The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticising additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual. The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticising additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticising additive is present in a concentration of 1 to 5% by weight.Type: ApplicationFiled: May 17, 2007Publication date: June 7, 2012Applicant: Nitrochemie Wimmis AGInventors: Ulrich Schaedeli, Hanspeter Andres, Kurt Ryf, Dominik Antenen, Beat Vogelsanger
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Publication number: 20090208647Abstract: The method for producing a propellant powder (TLP) with a layered grain structure starts with a green powder, which is impregnated in a watery emulsion with an energetic plasticizer and a polymeric deterrent. Propellant powders (TLP) can be produced in industrial quantities by avoiding the dangerous direct introduction of a blasting oil. The propellant powders (TLP) produced in this way have similar characteristics and a similar structure as the known propellant powders (TLP).Type: ApplicationFiled: December 1, 2008Publication date: August 20, 2009Applicant: Nitrochemie Wimmis AGInventors: Kurt Ryf, Beat Vogelsanger, Ulrich Schaedeli, Bruno Ossola
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Patent number: 7473330Abstract: The method for producing a propellant powder (TLP) with a layered grain structure starts with a green powder, which is impregnated in a watery emulsion with an energetic plasticizer and a polymeric deterrent. Propellant powders (TLP) can be produced in industrial quantities by avoiding the dangerous direct introduction of a blasting oil. The propellant powders (TLP) produced in this way have similar characteristics and a similar structure as the known propellant powders (TLP).Type: GrantFiled: June 13, 2001Date of Patent: January 6, 2009Assignee: Nitrochemie Wimmis AGInventors: Kurt Ryf, Beat Vogelsanger, Ulrich Schaedeli, Bruno Ossola
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Patent number: 6867301Abstract: A process for the preparation of a quinacridone comprises oxidation of a 6,13-dihydroquinacridone using hydrogen peroxide, wherein a polymeric dispersant is present in the oxidation reaction mixture. The resulting pigment products exhibit greatly improved dispersibility relative to pigments in which the polymeric dispersant is not present during the oxidation reaction.Type: GrantFiled: December 23, 2003Date of Patent: March 15, 2005Assignee: Ciba Specialty Chemicals CorporationInventors: Ulrich Schädeli, Edward Ephraim Jaffe, Linda SnyderAllen
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Publication number: 20020043316Abstract: The method for producing a propellant powder (TLP) with a layered grain structure starts with a green powder, which is impregnated in a watery emulsion with an energetic plasticizer and a polymeric deterrent. Propellant powders (TLP) can be produced in industrial quantities by avoiding the dangerous direct introduction of a blasting oil. The propellant powders (TLP) produced in this way have similar characteristics and a similar structure as the known propellant powders (TLP).Type: ApplicationFiled: June 13, 2001Publication date: April 18, 2002Inventors: Kurt Ryf, Beat Vogelsanger, Ulrich Schaedeli, Bruno Ossola
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Patent number: 6280511Abstract: A microbead comprising at least one thermoplastic polymers having distributed one or more compounds which are pigment precursors, the melting temperature of the lowest-melting polymer of the microbead being at least higher than the lowest temperature required to transform all pigment precursors in the microbead into the respective pigments.Type: GrantFiled: October 27, 1999Date of Patent: August 28, 2001Assignee: Ciba Specialty Chemicals Corp.Inventors: Ulrich Schaedeli, Patrice Bujard
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Patent number: 6146793Abstract: A terpolymer with chemically amplified (acid labile) moieties and organosilicon moieties suitable for use as the binder resin for a photoimageable resist photoresist composition suitable for use in 193 nm photolithographic processes.The terpolymers have the following structural units: ##STR1## where R is a methyl or hydroxyethyl group, R.sup.1 is a hydrogen atom, a methyl group or a --CH.sub.2 COOCH.sub.3 group and R.sup.2 and R.sup.3 are each independently a hydrogen atom or a methyl group.Type: GrantFiled: February 22, 1999Date of Patent: November 14, 2000Assignee: Arch Specialty Chemicals, Inc.Inventors: Ulrich Schaedeli, Andrew J. Blakeney, Thomas Steinhausler, Daniela White, Allen H. Gabor
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Patent number: 6042989Abstract: A radiation sensitive composition comprising (a) a terpolymer containing 20 to 70 mole percent of an acid-labile repeating unit, 3 to 40 mole percent of an acrylic or acrylonitrile based repeating unit and a repeating unit containing silicon side-chains and (b) a photo-acid generator. The silicon content of terpolymer is 7 to 20 weight percent. The composition is used primarily in the formulation of multilayer positive operating photoresists.Type: GrantFiled: October 26, 1998Date of Patent: March 28, 2000Assignee: Olin Microelectronic Chemicals, Inc.Inventors: Ulrich Schaedeli, Eric Tinguely, Manfred Hofmann, Pasquale Alfred Falcigno, Carl-Lorenz Mertesdorf
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Patent number: 6028154Abstract: A terpolymer containing 20 to 70 mole percent of an acid labile repeating unit, 3 to 40 mole percent of an acrylonitrile based repeating unit and a repeating unit containing silicon side chains. The silicon side chain repeating unit is provided in sufficient amounts so that the terpolymer silicon content is 7 to 20 weight percent. The terpolymer is used primarily in the formulation of multilayer positive operating photoresists.Type: GrantFiled: October 26, 1998Date of Patent: February 22, 2000Assignee: Olin Microelectronic Chemicals, Inc.Inventors: Ulrich Schaedeli, Eric Tinguely, Manfred Hofmann, Pasquale Alfred Falcigno, Carl-Lorenz Mertesdorf
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Patent number: 5886119Abstract: A terpolymer containing 20 to 70 mole percent of an acid labile repeating unit, 3 to 40 mole percent of an acrylic acid or acrylonitrile based repeating unit and a repeating unit containing silicon side chains. The silicon side chain repeating unit is provided in sufficient amounts so that the terpolymer silicon content is 7 to 20 weight percent. The terpolymer is used primarily in the formulation of multilayer positive operating photoresists.Type: GrantFiled: July 16, 1996Date of Patent: March 23, 1999Assignee: Olin Microelectronic Chemicals, Inc.Inventors: Ulrich Schaedeli, Eric Tinguely, Manfred Hofmann, Pasquale Alfred Falcigno, Carl-Lorenz Mertesdorf
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Patent number: 5776657Abstract: Photoresist compositions are described, which are sufficiently transparent in the solvent-free state for radiation of a wavelength of approximately 193 nm, and which contain nonaromatic chemical groups, which can be converted into groups with aromatic structural elements (latent aromatic groups) under process conditions, for which an image structure comprised of the resist material is not disrupted. A preferred component with latent aromatic groups is bicyclo?3.2.2!nona-6,8-dien-3-one Resist coatings, which are produced with these compositions, show a stability in plasma etching, which is comparable with the stability of conventional resists based on phenolic resins.Type: GrantFiled: March 14, 1996Date of Patent: July 7, 1998Assignee: OCG Microelectronic Materials, Inc.Inventors: Ulrich Schaedeli, Manfred Hofmann, Norbert Muenzel, Arnold Grubenmann