Patents by Inventor Tatsushi Murakami
Tatsushi Murakami 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: 10550855Abstract: An axial flow fan has a boss portion rotationally driven by a motor; a plurality of rotary blades extending radially from a periphery of the boss portion and configured to force air to flow in a direction of a rotation axis of the motor; and a bellmouth accommodating the plurality of rotary blades, the bellmouth comprising a suction-side round portion having a curved surface expanded in a radial direction of the bellmouth, and a discharge-side round portion having a curved surface expanded in the radial direction of the bellmouth, the plurality of rotary blades each being entirely inclined to have an outer peripheral portion in a downstream side in an airflow direction, entirety of the outer peripheral portion being located on the downstream side in the air flow direction with respect to the suction-side round portion.Type: GrantFiled: February 14, 2014Date of Patent: February 4, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshikatsu Arai, Tomoya Fukui, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami
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Patent number: 10208770Abstract: An axial flow fan improves air capacity and static pressure characteristics, and can ease stress at a leading edge portion of a blade base, even when a shape for noise reduction is adopted. An axial flow fan includes a boss portion and rotor blades. A rotor blade is segmented into a first area extending from the boss portion toward the outer peripheral side, and a second area connected to the first area and extending from the first area to the outermost periphery of the rotor blade. The distribution of a forward sweep angle varies quadratically in the first area, and the maximum forward sweep angle in the first area is not larger than the forward sweep angle in the second area. The distribution of chord-pitch ratio varies in a curved manner from the base as the minimum value in the first area, and is linear in the second area.Type: GrantFiled: February 24, 2014Date of Patent: February 19, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshikatsu Arai, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami
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Publication number: 20160348700Abstract: An axial flow fan improves air capacity and static pressure characteristics, and can ease stress at a leading edge portion of a blade base, even when a shape for noise reduction is adopted. An axial flow fan includes a boss portion and rotor blades. A rotor blade is segmented into a first area extending from the boss portion toward the outer peripheral side, and a second area connected to the first area and extending from the first area to the outermost periphery of the rotor blade. The distribution of a forward sweep angle varies quadratically in the first area, and the maximum forward sweep angle in the first area is not larger than the forward sweep angle in the second area. The distribution of chord-pitch ratio varies in a curved manner from the base as the minimum value in the first area, and is linear in the second area.Type: ApplicationFiled: February 24, 2014Publication date: December 1, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshikatsu ARAI, Hitoshi KIKUCHI, Tsutomu TAKAHASHI, Tatsushi MURAKAMI
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Publication number: 20160348699Abstract: An axial flow fan has a boss portion rotationally driven by a motor; a plurality of rotary blades extending radially from a periphery of the boss portion and configured to force air to flow in a direction of a rotation axis of the motor; and a bellmouth accommodating the plurality of rotary blades, the bellmouth comprising a suction-side round portion having a curved surface expanded in a radial direction of the bellmouth, and a discharge-side round portion having a curved surface expanded in the radial direction of the bellmouth, the plurality of rotary blades each being entirely inclined to have an outer peripheral portion in a downstream side in an airflow direction, entirety of the outer peripheral portion being located on the downstream side in the air flow direction with respect to the suction-side round portion.Type: ApplicationFiled: February 14, 2014Publication date: December 1, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshikatsu ARAI, Tomoya FUKUI, Hitoshi KIKUCHI, Tsutomu TAKAHASHI, Tatsushi MURAKAMI
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Patent number: 8883001Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.Type: GrantFiled: May 29, 2007Date of Patent: November 11, 2014Assignees: Daicel Chemical Industries, Ltd., Merck Patent GmbHInventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
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Patent number: 8883002Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.Type: GrantFiled: December 27, 2010Date of Patent: November 11, 2014Assignees: Daicel Chemical Industries, Ltd., Merck Patent GmbHInventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
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Publication number: 20110094955Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.Type: ApplicationFiled: December 27, 2010Publication date: April 28, 2011Inventors: Tatsushi MURAKAMI, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
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Publication number: 20110089095Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.Type: ApplicationFiled: December 27, 2010Publication date: April 21, 2011Inventors: Tatsushi MURAKAMI, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
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Publication number: 20070227957Abstract: This invention provides a separating agent for optical isomers, which has high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of the optical isomers, and a separation column for optical isomers having the same. This invention provides: a separating agent for optical isomers which is used for separation of optical isomers in a sample comprising the optical isomers, which is comprising a monolithic inorganic type carrier having a meso pore formed on an inner wall surface of a specific macropore, and a polysaccharide or a polysaccharide derivative supported on the monolithic inorganic type carrier, wherein the meso pore has a pore size of 6 to 100 nm; and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube.Type: ApplicationFiled: May 29, 2007Publication date: October 4, 2007Inventors: Tatsushi Murakami, Akihiro Nakanishi, Dieter Lubda, Michael Schulte
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Publication number: 20070163961Abstract: The present invention provides a separating agent for enantiomeric isomers which exhibits stable separating performance, high optical resolving power, and sufficient solvent resistance at the same time. The separating agent for enantiomeric isomers includes an optically active polymer compound such as cellulose or amylose carried on a carrier such as silica gel through chemical bonding and has a specific surface area of 10 to 150 m2/g and an average particle size of 1 to 100 ?m.Type: ApplicationFiled: March 3, 2005Publication date: July 19, 2007Inventors: Yasuhiro Kagamihara, Tatsushi Murakami
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Patent number: 5939552Abstract: The process for preparing mevalonolactone compounds is carried out by means of batch system chromatography or a simulated moving bed chromatographic process using columns filled with an optical resolution filler comprising a polysaccharide derivative.Type: GrantFiled: August 22, 1996Date of Patent: August 17, 1999Assignees: Daicel Chemical Industries, Ltd., Nissan Chemical Industries, Ltd.Inventors: Hirokazu Ikeda, Tatsushi Murakami, Hiroo Matsumoto, Yoshio Ohara, Hiroyasu Kanda
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Patent number: 5772876Abstract: A separating agent which comprises a polysaccharide derivative having an Mw/Mn (wherein Mw and Mn represent the weight-average molecular weight calculated as polystyrene and the number-average molecular weight calculated as polystyrene, respectively), which indicates the extent of molecular weight distribution, of 1 to 3.When liquid chromatography is effected using this separating agent as a column packing, the base line is highly steady, various types of solvents can be used as the eluent, and low-molecular polysaccharide derivatives are not eluted.Type: GrantFiled: September 22, 1997Date of Patent: June 30, 1998Assignee: Daicel Chemical Industries, Ltd.Inventor: Tatsushi Murakami
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Patent number: 5734043Abstract: A separating agent which, when used as the packing material for reverse-phase liquid chromatography, has excellent baseline stability in the mobile phase and an increased number of steps of the detected peak in the measurement is provided. The agent comprises a polysaccharide derivative supported on a silica gel having surface silanol groups treated with a silylating agent having an aralkyl group.Type: GrantFiled: December 29, 1995Date of Patent: March 31, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsushi Murakami, Nanami Nishida
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Patent number: 5587467Abstract: Polysaccharide derivative molecules are crosslinked exclusively among themselves on a support such as silica gel with the use of a polyfunctional crosslinking agent to immobilize the polysaccharide derivative on the support. The separating agent for optical isomers produced by the method has a high solvent resistance and, therefore, is most suitable as a separating agent for optical resolution.Type: GrantFiled: January 11, 1995Date of Patent: December 24, 1996Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsushi Murakami, Akito Ichida
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Patent number: D750211Type: GrantFiled: May 23, 2014Date of Patent: February 23, 2016Assignee: Mitsubishi Electric CorporationInventors: Toshikatsu Arai, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami, Hiromichi Aoki, Tomoya Fukui
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Patent number: D755945Type: GrantFiled: October 21, 2015Date of Patent: May 10, 2016Assignee: Mitsubishi Electric CorporationInventors: Toshikatsu Arai, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami, Hiromichi Aoki, Tomoya Fukui
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Patent number: D755946Type: GrantFiled: October 21, 2015Date of Patent: May 10, 2016Assignee: Mitsubishi Electric CorporationInventors: Toshikatsu Arai, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami, Hiromichi Aoki, Tomoya Fukui
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Patent number: D755947Type: GrantFiled: October 21, 2015Date of Patent: May 10, 2016Assignee: Mitsubishi Electric CorporationInventors: Toshikatsu Arai, Hitoshi Kikuchi, Tsutomu Takahashi, Tatsushi Murakami, Hiromichi Aoki, Tomoya Fukui
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Patent number: D812732Type: GrantFiled: October 29, 2015Date of Patent: March 13, 2018Assignee: Mitsubishi Electric CorporationInventors: Tatsushi Murakami, Tsutomu Takahashi, Toshikatsu Arai, Hitoshi Kikuchi, Hiromichi Aoki, Yuuya Kousaka