Patents by Inventor Gunter Stich
Gunter Stich 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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Patent number: 8815025Abstract: A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.Type: GrantFiled: November 3, 2006Date of Patent: August 26, 2014Assignees: JFE Steel Corporation, ThyssenKrupp Steel AGInventors: Takeshi Yokota, Akio Kobayashi, Kazuhiro Seto, Yoshihiro Hosoya, Thomas Heller, Brigitte Hammer, Rolf Bode, Günter Stich
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Publication number: 20140041767Abstract: A hot-rolled flat steel product having a tensile strength of at least 1100 MPa, good elongation properties, and good deformation properties. The flat steel product is produced from a complex phase steel, which contains, in addition to iron and inevitable impurities (in % by weight), C: 0.13-0.2%, Mn: 1.8-2.5%, Si: 0.70-1.3%, Al: 0.01 to 0.1%, P: up to 0.1%, S: up to 0.01%, Cr: 0.25-0.70%, optionally Mo, the total of the Cr and Mo contents being 0.25-0.7%, Ti: 0.08-0.2%, B: 0.0005-0.005%, and a structure which consists of at the most 10% by volume of residual austenite, 10-60% by volume of martensite, at the most 30% by volume of ferrite and at least 10% by volume of bainite. Also, a method for producing such a flat steel product.Type: ApplicationFiled: December 29, 2011Publication date: February 13, 2014Applicant: THYSSENKRUPP STEEL EUROPE AGInventors: Brigitte Hammer, Jörg Mertens, Günter Stich
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Patent number: 8491063Abstract: The invention relates to a wheel rim for a motor vehicle which can be economically manufactured, with a wheel disc made of steel sheet and a rim flap running around the circumference of the wheel disc. Due to the fact that the steel sheet of the wheel disc is formed from at least three superimposed steel layers, joined to one another by roll-bonding in a non-detachable manner, of which the inner core layer has a lower strength than the outer layers, it is thereby guaranteed that the wheel rim according to the invention, with a low weight, can safely accommodate the forces arising in practical operation.Type: GrantFiled: September 21, 2009Date of Patent: July 23, 2013Assignee: ThyssenKrupp Steel Europe AGInventors: Günter Stich, Horst Walter Tamler, Jens-Ulrik Becker, Thomas Heller, Roland Wunderlich
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Publication number: 20110227400Abstract: The invention relates to a wheel rim for a motor vehicle which can be economically manufactured, with a wheel disc made of steel sheet and a rim flap running around the circumference of the wheel disc. Due to the fact that the steel sheet of the wheel disc is formed from at least three superimposed steel layers, joined to one another by roll-bonding in a non-detachable manner, of which the inner core layer has a lower strength than the outer layers it is thereby guaranteed that the wheel rim according to the invention, with a low weight, can safely accommodate the forces arising in practical operation.Type: ApplicationFiled: September 21, 2009Publication date: September 22, 2011Applicant: THYSSENKRUPP STEEL EUROPE AGInventors: Günter Stich, Horst Walter Tamler, Jens-Ulrik Becker, Thomas Heller, Roland Wunderlich
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Publication number: 20110220252Abstract: A dual-phase steel, a flat product and processes for the production thereof. The dual-phase steel having a strength of at least 950 MPa, good deformability, and good surface finish. It is possible, when a simple production process is used, for the flat product produced from this steel to be formed into a complexly formed component, such as part of a car body, either uncoated or provided with an anti-corrosion coating. The steel according to the invention has a structure comprising 20-70% martensite, up to 8% retained austenite and the remainder ferrite and/or bainite and has the following composition (in % by weight): C: 0.050-0.105%, Si: 0.20-0.60%, Mn: 2.10-2.80%, Cr: 0.20-0.80%, Ti: 0.02-0.10%, B: <0.0020%, Mo: <0.25%, Al: <0.10%, Cu: up to 0.20%, Ni: up to 0.10%, Ca: up to 0.005%, P: up to 0.2%, S: up to 0.01%, N: up to 0.012%, remainder iron and unavoidable impurities.Type: ApplicationFiled: August 7, 2008Publication date: September 15, 2011Applicant: TYHSSENKRUPP STEEL EUROPE AGInventors: Brigitte Hammer, Thomas Heller, Ekaterina Bocharova, Dorothea Mattissen, Günter Stich, Silke Strauss
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Patent number: 7919194Abstract: A high strength steel sheet and a method for manufacturing the same has superior phosphatability properties and hot-dip galvannealed properties besides a tensile strength of 950 MPa or more and a high ductility, and also having a small variation in mechanical properties with the change in annealing conditions.Type: GrantFiled: February 18, 2009Date of Patent: April 5, 2011Assignees: JFE Steel Corporation, ThyssenKrupp Steel AGInventors: Kenji Kawamura, Taro Kizu, Shusaku Takagi, Kohei Hasegawa, Hiroshi Matsuda, Akio Kobayashi, Yasunobu Nagataki, Yasushi Tanaka, Thomas Heller, Brigitte Hammer, Jian Bian, Günter Stich, Rolf Bode, Brigitte Bode, legal representative
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Publication number: 20100273024Abstract: A dual-phase steel, a flat product produced therefrom and a process for the production thereof. The dual-phase steel has, in addition to a strength of at least 950 MPa and good deformability, a surface finish which, when a simple production process is used, makes it possible for the flat product produced from this steel to be formed into a complexly formed component, such as a part of a car bodywork, in an uncoated state or in a state provided with an anti-corrosion coating. The steel according to the invention comprises 20-70% martensite, up to 8% retained austenite and the remainder ferrite and/or bainite and comprises (in % by weight): C: 0.10-0.20%, Si: 0.10-0.60%, Mn: 1.50-2.50%, Cr: 0.20-0.80%, Ti: 0.02-0.08%, B: <0.0020%, Mo: <0.25%, Al: <0.10%, P: ?0.2%, S: ?0.01%, N: ?0.012%, the remainder iron and unavoidable impurities.Type: ApplicationFiled: August 7, 2008Publication date: October 28, 2010Applicant: THYSSENKRUPP STEEL EUROPE AGInventors: Ekaterina Bocharova, Thomas Heller, Dorothea Mattissen, Gunter Stich, Silke Strauss, Thomas Nickels
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Publication number: 20090214892Abstract: A high strength steel sheet and a method for manufacturing the same has superior phosphatability properties and hot-dip galvannealed properties besides a tensile strength of 950 MPa or more and a high ductility, and also having a small variation in mechanical properties with the change in annealing conditions.Type: ApplicationFiled: February 18, 2009Publication date: August 27, 2009Applicants: JFE Steel Corporation, a corporation of Japan, ThyssenKrupp Steel AG, a corporation of GermanyInventors: Kenji Kawamura, Taro Kizu, Shusaku Takagi, Kohei Hasegawa, Hiroshi Matsuda, Akio Kobayashi, Yasunobu Nagataki, Yasuhi Tanaka, Thomas Heller, Brigitte Hammer, Jian Bian, Gunter Stich, Rolf Bode
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Publication number: 20070119521Abstract: A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.Type: ApplicationFiled: November 3, 2006Publication date: May 31, 2007Applicants: JFE Steel Corporation, a corporation of Japan, ThyssenKrupp Steel AG, a corporation of GermanyInventors: Takeshi Yokota, Akio Kobayashi, Kazuhiro Seto, Yoshihiro Hosoya, Thomas Heller, Brigitte Hammer, Rolf Bode, Gunter Stich
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Patent number: 5906690Abstract: A method of producing cold-rolled, high-strength steel strip with good plasticity and isotropic properties out of steel comprising no more than 0.08% carbon, no more than 10% silicon, no more than 1.8% manganese, between 0.010 and 0.10% phosphorus, no more than 0.02% sulfur, no more than 0.08% aluminum and no more than 0.008% nitrogen by weight plus one or more of the elements titanium, vanadium, niobium, and zirconium, the remainder being iron, by hot rolling, cold rolling, and recrystallization annealing; followed by temper rolling. The steel contains either three times as much titanium or six times as much niobium or zirconium as nitrogen.Type: GrantFiled: December 4, 1996Date of Patent: May 25, 1999Assignee: Fried. Krupp AG Hoesch-KruppInventors: Bernhard Engl, Klaus-Dieter Horn, Gunter Stich