Patents by Inventor Tetsuichi Motegi
Tetsuichi Motegi 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: 7837811Abstract: The present invention provides a method for manufacturing a composite of a carbon nanomaterial and a metallic material which has a homogeneous composite metal structure and thixotropic properties by compositing a metallic material of a non-ferrous metal alloy with a carbon nanomaterial by using both stirring and ultrasonic vibration. The method comprises compositing the metallic material of the non-ferrous metal alloy with the carbon nanomaterial by adding the carbon nanomaterial in a state where the metallic material shows thixotropic properties by spheroidization of solid phase in a semi-solid state, and the compositing is performed by a process for stirring and kneading the semi-solid metallic material while keeping the temperature thereof at a solid-liquid coexisting temperature, and a process for dispersing the carbon nanomaterial to liquid phase between solid phases by ultrasonic vibration.Type: GrantFiled: May 11, 2007Date of Patent: November 23, 2010Assignees: Nissei Plastic Industrial Co., Ltd., Chiba Institute of TechnologyInventors: Tetsuichi Motegi, Fumi Tanabe, Masashi Suganuma, Kazuo Anzai
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Publication number: 20080175744Abstract: A casting heat-resistance Mg alloy improved in heat resistance without relying upon expensive RE contains Cu. More specifically, it contains Al (8.0 weight %), Cu (1.0-5.0 weight %), Zn (2.0 weight %), Be (0.01 weight %) and Mg (the rest). The alloy can be prevented from deteriorating in corrosion resistance by adjusting the added amount of Cu to 1.0-1.5 weight %. The corrosion resistance of the alloy can be improved more by adding 0.5 to 1.0 weight % Mn as well.Type: ApplicationFiled: April 16, 2007Publication date: July 24, 2008Inventors: Tetsuichi Motegi, Yosuke Tamura, Yukio Sanpei
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Publication number: 20080127777Abstract: The present invention provides a method for manufacturing a composite of a carbon nanomaterial and a metallic material which has a homogeneous composite metal structure and thixotropic properties by compositing a metallic material of a non-ferrous metal alloy with a carbon nanomaterial by using both stirring and ultrasonic vibration. The method comprises compositing the metallic material of the non-ferrous metal alloy with the carbon nanomaterial by adding the carbon nanomaterial in a state where the metallic material shows thixotropic properties by spheroidization of solid phase in a semi-solid state, and the compositing is performed by a process for stirring and kneading the semi-solid metallic material while keeping the temperature thereof at a solid-liquid coexisting temperature, and a process for dispersing the carbon nanomaterial to liquid phase between solid phases by ultrasonic vibration.Type: ApplicationFiled: May 11, 2007Publication date: June 5, 2008Inventors: Tetsuichi Motegi, Fumi Tanabe, Masashi Suganuma, Kazuo Anzai
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Patent number: 7343959Abstract: The present invention provides a pressure casting method of a magnesium alloy. In the method, a molten magnesium alloy is cooled to form a partially molten state containing a solid-phase, and the partially molten state is further cooled to form a solid-phase granularly crystallized solid material. The solid material is partially-melted and pressure cast into a mold by a molding machine. A ratio of primary crystals in said solid material is set to 55 to 65%. The solid material is partially-melted in a solid-phase and liquid-phase coexisting state at a selected heating temperature so that a semi-solid having thixotropic properties and having the size of a main solid phase of 50 to 250 ?m and a solid-phase ratio of 30 to 70% is formed. The semi-solid is pressure cast into a mold through a nozzle while maintaining the semi-solid state to form metal products having a ratio of primary crystals of 20 to 50%.Type: GrantFiled: August 16, 2006Date of Patent: March 18, 2008Assignees: Nissei Plastic Industrial Co., Ltd., Chiba Institute of TechnologyInventors: Tetsuichi Motegi, Kazutoshi Takayama, Kiyoto Takizawa
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Publication number: 20070215311Abstract: With a device including a melting furnace (11) for melting metals to form a molten metal (M), a tilted cooling body (31) allowing the molten metal (M) delivered from the melting furnace (11) to be poured thereon from above, and a tilted cooling body vibrating mechanism (36) for imparting vibration to the tilted cooling body (31), this invention can produce metal slurry possessing fine spherical crystals efficiently and continuously.Type: ApplicationFiled: May 19, 2005Publication date: September 20, 2007Applicant: Kiyotaka YOSHIHARAInventors: Tetsuichi Motegi, Kiichi Miyazaki, Kouichi Tada, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20060272750Abstract: The present invention provides a pressure casting method of a magnesium alloy. In the method, a molten magnesium alloy is cooled to form a partially molten state containing a solid-phase, and the partially molten state is further cooled to form a solid-phase granularly crystallized solid material. The solid material is partially-melted and pressure cast into a mold by a molding machine. A ratio of primary crystals in said solid material is set to 55 to 65%. The solid material is partially-melted in a solid-phase and liquid-phase coexisting state at a selected heating temperature so that a semi-solid having a thixotropic properties and having the size of a main solid phase of 50 to 250 ?m and a solid-phase ratio of 30 to 70% is formed. The semi-solid is pressure cast into a mold through a nozzle while maintaining the semi-solid state to form metal products having a ratio of primary crystals of 20 to 50%.Type: ApplicationFiled: August 16, 2006Publication date: December 7, 2006Inventors: Tetsuichi Motegi, Kazutoshi Takayama, Kiyoto Takizawa
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Patent number: 6923244Abstract: A pouring apparatus for castings uses separate systems for supplying billets and delivering the semi-molten material, making it possible to readily modify the discharge flows and pressure. A pouring apparatus for castings that comprises solid material supply means for supplying solid material to a melting basin; heating means for heating the melting basin to semi-melt solid material supplied to the melting basin; a conveyance chamber provided adjacent to the melting basin; and delivery means for discharging, from a discharge nozzle, semi-molten material conveyed from the melting basin to the conveyance chamber.Type: GrantFiled: July 1, 2002Date of Patent: August 2, 2005Assignees: Seiko Idea Center Co., Ltd.Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20050034837Abstract: The present invention provides a pressure casting method of a magnesium alloy. In the method, a molten magnesium alloy is cooled to form a partially molten state containing a solid-phase, and the partially molten state is further cooled to form a solid-phase granularly crystallized solid material. The solid material is partially-melted and pressure cast into a mold by a molding machine. A ratio of primary crystals in said solid material is set to 55 to 65%. The solid material is partially-melted in a solid-phase and liquid-phase coexisting state at a selected heating temperature so that a semi-solid having a thixotropic properties and having the size of a main solid phase of 50 to 250 ?m and a solid-phase ratio of 30 to 70% is formed. The semi-solid is pressure cast into a mold through a nozzle while maintaining the semi-solid state to form metal products having a ratio of primary crystals of 20 to 50%.Type: ApplicationFiled: July 9, 2004Publication date: February 17, 2005Inventors: Tetsuichi Motegi, Kazutoshi Takayama, Kiyoto Takizawa
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Publication number: 20040261576Abstract: A method for grain refinement of magnesium alloy castings includes adding graphite (C) powder and manganese dioxide (MnO2) to a melt of magnesium alloy containing aluminum (Al) and manganese (Mn) to finely divide crystal grains of a cast structure.Type: ApplicationFiled: April 23, 2004Publication date: December 30, 2004Applicants: Tetsuichi Motegi, Kiyotaka Yoshiwara, Seiko Idea Center Co., Ltd.Inventors: Tetsuichi Motegi, Kiyotaka Yoshihara, Tetsuo Kikuchi
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Patent number: 6616729Abstract: A method of grain refining cast magnesium alloy includes adding to a magnesium alloy melt containing aluminum and manganese, pure carbon powder, or a carbon source in combination with niobium pentoxide or vanadium pentoxide.Type: GrantFiled: July 30, 2002Date of Patent: September 9, 2003Assignees: Seiko Idea Center Co., Ltd.Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara, Eiji Yano
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Publication number: 20030019547Abstract: A method of grain refining cast magnesium alloy includes adding to a magnesium alloy melt containing aluminum and manganese, pure carbon powder, or a carbon source in combination with niobium pentoxide or vanadium pentoxide.Type: ApplicationFiled: July 30, 2002Publication date: January 30, 2003Applicant: Tetsuichi MOTEGI (30%)Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara, Eiji Yano
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Publication number: 20030000676Abstract: A pouring apparatus for castings uses separate systems for supplying billets and delivering the semi-molten material, making it possible to readily modify the discharge flows and pressure. A pouring apparatus for castings that comprises solid material supply means for supplying solid material to a melting basin; heating means for heating the melting basin to semi-melt solid material supplied to the melting basin; a conveyance chamber provided adjacent to the melting basin; and delivery means for discharging, from a discharge nozzle, semi-molten material conveyed from the melting basin to the conveyance chamber.Type: ApplicationFiled: July 1, 2002Publication date: January 2, 2003Applicant: Tetsuichi MOTEGIInventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20020134471Abstract: An apparatus for the production of a platelike metal material includes a cooling unit for cooling a molten metal to form a metal slurry containing a solid phase, a pair of coarse rollers for cooling the metal slurry and, at the same time, rolling it to thereby give rise to a continuous, solidified, platelike metal material, and a cutting mechanism for cutting the continuous, solidified, platelike metal material into platelike metal materials of a stated length. Thus, platelike metal materials containing numerous uniform spherical crystals are obtained.Type: ApplicationFiled: March 25, 2002Publication date: September 26, 2002Applicant: Tetsuichi Motegi (20%)Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20010020526Abstract: A casting method includes the steps of cooling a molten metal to form a metal slurry containing a solid phase, cooling the metal slurry to form a solid metal material and heating the metal material to a semi-melted metal material and supplying it into a mold. A casting apparatus includes a first device for cooling a molten metal to form a metal slurry containing a solid phase and a second device for cooling the metal slurry to form a solid metal material. The metal material is then heated to a semi-melted state and the resultant metal material is poured into a mold. A method for manufacturing a metal material being heated to a semi-melted state and then supplied into a mold, includes the steps of cooling a molten metal to form a metal slurry containing a solid phase and cooling the metal slurry to form a solid metal material.Type: ApplicationFiled: March 7, 2001Publication date: September 13, 2001Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshiwara