Patents by Inventor Ken Maeda

Ken Maeda 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).

  • Patent number: 8623782
    Abstract: There is provided by the present invention a process for preparing a copper-based catalyst having good catalytic activity, markedly excellent durability and good reproducibility. The process for preparing a copper-based catalyst of the invention is a process for preparing a catalyst composed of metal oxides containing copper oxide as an essential component and is characterized by comprising the following steps: (1) a step of bringing an acidic metal salt solution containing copper and a precipitant solution into contact with each other to obtain a slurry solution containing a precipitate of a catalyst precursor, and (2) a step of continuously bringing the slurry solution and a wash liquid into contact with each other to wash the precipitate, with substantially keeping the suspended state.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: January 7, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masami Murakami, Ken Maeda, Yuya Goto
  • Publication number: 20130266801
    Abstract: A thermal insulator with both excellent heat insulation and strength and a method of manufacturing the thermal insulator are provided. A thermal insulator according to the present invention includes metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber, wherein the thermal insulator has a bridge structure between the metal oxide fine particles which is formed by elution of part of the metal oxide fine particles. A method of manufacturing a thermal insulator according to the present invention includes a curing step of curing a dry pressed compact including metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber under a pressurized vapor saturated atmosphere at a temperature equal to or higher than 100° C. for four hours and a drying step of drying the cured dry pressed compact.
    Type: Application
    Filed: December 13, 2011
    Publication date: October 10, 2013
    Applicant: NICHIAS CORPORATION
    Inventors: Akifumi Sakamoto, Yoshihiko Goto, Yasuo Ito, Ken Maeda
  • Publication number: 20130094269
    Abstract: A power conversion apparatus includes a smoothing capacitor module having a plurality of one and the other DC terminals arranged in a state of being laminated with each other, a flow channel forming body for forming a cooling medium flow channel that allows a cooling medium to flow along the capacitor module, and a plurality of power semiconductor modules each including a module case having a cooling surface, DC terminals projecting in one direction in a laminated state from the module case, and an AC terminal projecting in one direction from the module case. The power semiconductor modules are fixed to the flow channel forming body so that the cooling surface of the module case of the power semiconductor module is inserted into the cooling medium flow channel and comes into contact with the cooling medium flowing within the flow channel forming body.
    Type: Application
    Filed: March 30, 2011
    Publication date: April 18, 2013
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ken Maeda, Kenichiro Nakajima, Masamichi Kase
  • Patent number: 8186627
    Abstract: In order to control an attitude of a movable object having a flexible member (50) through an attitude maneuver, first, based on vibration of the flexible member at the time of the attitude maneuver, for example, a sampling function including no frequency components equal to or higher than a particular frequency is obtained. With the use of the sampling function, a control target value is created as a previously-frequency-shaping-type feedforward control law. Based on the control target value, attitude control data is created. The attitude control data can be used for the attitude maneuver with respect to the movable object.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: May 29, 2012
    Assignees: NEC TOSHIBA Space Systems, Ltd., Japan Aerospace Exploration Agency
    Inventors: Toshio Kamiya, Ken Maeda, Tatsuaki Hashimoto, Shinichiro Sakai
  • Publication number: 20110301022
    Abstract: There is provided by the present invention a process for preparing a copper-based catalyst having good catalytic activity, markedly excellent durability and good reproducibility. The process for preparing a copper-based catalyst of the invention is a process for preparing a catalyst composed of metal oxides containing copper oxide as an essential component and is characterized by comprising the following steps: (1) a step of bringing an acidic metal salt solution containing copper and a precipitant solution into contact with each other to obtain a slurry solution containing a precipitate of a catalyst precursor, and (2) a step of continuously bringing the slurry solution and a wash liquid into contact with each other to wash the precipitate, with substantially keeping the suspended state.
    Type: Application
    Filed: February 15, 2010
    Publication date: December 8, 2011
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masami Murakami, Ken Maeda, Yuya Goto
  • Patent number: 8038101
    Abstract: Disclosed is an attitude change control system that is designed to efficiently output a torque for attitude change of a space craft using CMGs and realizes a real time CMG driving rule. A CMG gimbal steering law 15 generates target profiles for setting angle and angular velocity for each gimbal by applying an anisotropic weighted gradient method based upon the necessary torque calculated by a feed back controller 13 and a feed forward controller 14 from the angle and angular velocity in the target direction from the attitude navigator 12 and the current angle and angular velocity of the space craft estimated by the attitude estimator 11 as well as the current condition of each gimbal from the CMG 40, thereby controlling the CMG 40 for changing the attitude of the space craft dynamics 50 to the target direction.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: October 18, 2011
    Assignee: NEC TOSHIBA Space Systems, Ltd.
    Inventors: Keita Ogo, Toshio Kamiya, Ken Maeda
  • Publication number: 20110249421
    Abstract: A power conversion device for a vehicle includes: a power module that includes a switching device and, upon operation of the switching device, converts DC power into AC power to be supplied to an electric machine for driving a vehicle; a capacitor module that includes a smoothing capacitor element, an input-side power source terminal for receiving DC power, and an output-side power source terminal for supplying DC power to the power module; and a noise removal capacitor for removing noise, wherein: the noise removal capacitor is built in the capacitor module, and the noise removal capacitor is electrically connected to the input-side power source terminal in a position where a distance between a connection position of the noise removal capacitor and the input-side power source terminal is less than a distance between a connection position of the noise removal capacitor and the output-side power source terminal of the capacitor module.
    Type: Application
    Filed: October 26, 2009
    Publication date: October 13, 2011
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takeshi Matsuo, Kinya Nakatsu, Toshiya Satoh, Ken Maeda
  • Publication number: 20110052897
    Abstract: The present invention relates to a thermal insulation material including a first molded article formed by compression-molding inorganic nanoparticles, a second molded article laminated on at least one side of the first molded article and having a bending strength of at least 0.4 MPa, and an accouplement coupling the first molded article and the second molded article.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 3, 2011
    Applicant: NICHIAS CORPORATION
    Inventors: Yoshihiko Goto, Yasuo Ito, Ken Maeda, Akifumi Sakamoto
  • Publication number: 20090218449
    Abstract: In order to control an attitude of a movable object having a flexible member (50) through an attitude maneuver, first, based on vibration of the flexible member at the time of the attitude maneuver, for example, a sampling function including no frequency components equal to or higher than a particular frequency is obtained. With the use of the sampling function, a control target value is created as a previously-frequency-shaping-type feedforward control law. Based on the control target value, attitude control data is created. The attitude control data can be used for the attitude maneuver with respect to the movable object.
    Type: Application
    Filed: May 2, 2007
    Publication date: September 3, 2009
    Applicants: NEC Toshiba Space Systems, Ltd., Japan Aerospace Exploration Agency
    Inventors: Toshio Kamiya, Ken Maeda, Tatsuaki Hashimoto, Shinichiro Sakai
  • Publication number: 20090039202
    Abstract: Disclosed is an attitude change control system that is designed to efficiently output a torque for attitude change of a space craft using CMGs and realizes a real time CMG driving rule. A CMG gimbal steering law 15 generates target profiles for setting angle and angular velocity for each gimbal by applying an anisotropic weighted gradient method based upon the necessary torque calculated by a feed back controller 13 and a feed forward controller 14 from the angle and angular velocity in the target direction from the attitude navigator 12 and the current angle and angular velocity of the space craft estimated by the attitude estimator 11 as well as the current condition of each gimbal from the CMG 40, thereby controlling the CMG 40 for changing the attitude of the space craft dynamics 50 to the target direction.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 12, 2009
    Inventors: Keita Ogo, Toshio Kamiya, Ken Maeda
  • Publication number: 20080203230
    Abstract: Disclosed is an attitude change control system that is designed to efficiently output a torque for attitude change of a space craft using CMGs and realizes a real time CMG driving rule. A CMG gimbal steering law 15 generates target profiles for setting angle and angular velocity for each gimbal by applying an anisotropic weighted gradient method based upon the necessary torque calculated by a feed back controller 13 and a feed forward controller 14 from the angle and angular velocity in the target direction from the attitude navigator 12 and the current angle and angular velocity of the space craft estimated by the attitude estimator 11 as well as the current condition of each gimbal from the CMG 40, thereby controlling the CMG 40 for changing the attitude of the space craft dynamics 50 to the target direction.
    Type: Application
    Filed: February 7, 2008
    Publication date: August 28, 2008
    Inventors: KEITA OGO, Toshio Kamiya, Ken Maeda
  • Patent number: 7300998
    Abstract: The object of the present invention is to provide a high quality polyester resin having high productivity, stability and safety, a catalyst for polyester production with high catalytic activity, a method for producing the polyester resin with the catalyst, a polyester resin obtained with the catalyst, and a hollow molded container having the polyester resin. The polyester resin of the present invention satisfies specific parameters regarding polymerizability, stability, and metal content. The catalyst for polyester production satisfies specific parameters. The catalyst particularly preferably has: (a) a solid titanium-containing compound which has a maximum solubility in ethylene glycol of 1,000 ppm or more in terms of converted titanium amount when dissolved in ethylene glycol with heating at 150° C.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: November 27, 2007
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hideshi Hori, Fujito Ehara, Shouji Hiraoka, Ken Maeda, Tomohiro Suzuki, Nobumasa Mukai
  • Publication number: 20070100124
    Abstract: The present invention provides a titanium-containing solution having excellent storage stability and containing the titanium component at a high concentration; a catalyst for polyester preparation exhibiting excellent supply uniformity and high catalyst performance, which does not have adverse effect on the quality of the aliphatic diols to be recovered and recycled; and a catalyst for polyester preparation having high catalyst activity and high molding stability. The invention also provides a process for preparation of a polyester resin using the catalyst, and a blow molded product comprising the polyester resin. A first embodiment of the invention is a titanium-containing solution which contains titanium, an aliphatic diol and a polyhydric alcohol having a valency of 3 or greater. A second embodiment of the invention is a titanium-containing solution which has the titanium particle size in the solution within a specific range.
    Type: Application
    Filed: June 16, 2004
    Publication date: May 3, 2007
    Inventors: Ken Maeda, Takashi Nabeta, Tokio Nagayama, Hideshi Hori
  • Patent number: 7019227
    Abstract: In a case where a left-hand push-button switch is ON, a second relay RL2 is electrically de-energized to open a normally close contact RL2-1 of the second relay RL2 so that a relay contact circuit RC is opened. If, in this state, a right-hand push-button switch is shifted to a second OFF state, a normally close contact R3-1 of the right-hand push-button switch is opened. Thus, a third relay RL3 is not electrically de-energized and a first and a second circuits are in cutoff until both the right-hand and the left-hand push-button switches are returned to a first OFF state.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: March 28, 2006
    Assignee: Idec Izumi Corporation
    Inventors: Takao Fukui, Kenji Miyauchi, Kazuya Okada, Yasushi Kamino, Ken Maeda, Yoshio Sekino, Masaki Nobuhiro
  • Patent number: 6911609
    Abstract: A push-button switch 5 disposed in a switch case 3 has c-contacts and a normally close contact electrically connected with a terminal block 9 via conductors 39. Leading ends 23 of cores of a cable 7 introduced into the switch case 3 are inserted in insertion holes 49a, 49b formed in the terminal block 9. Screws 53a, 53b mounted to the terminal block 9 are tightened to press the leading ends 23 of the cores against conductive connection portions, on one side, in the insertion holes 49a, 49b, thereby to establish electrical connection.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: June 28, 2005
    Assignee: Idec Izumi Corporation
    Inventors: Kenji Miyauchi, Takao Fukui, Kazuya Okada, Yasushi Kamino, Ken Maeda, Yoshio Sekino
  • Publication number: 20050107576
    Abstract: The object of the present invention is to provide a high quality polyester resin having high productivity, stability and safety, a catalyst for polyester production with high catalytic activity, a method for producing the polyester resin with the catalyst, a polyester resin obtained with the catalyst, and a hollow molded container comprising the polyester resin. The polyester resin of the present invention satisfies specific parameters regarding polymerizability, stability, and metal content. The catalyst for polyester production satisfies specific parameters. The catalyst particularly preferably comprises: (a) a solid titanium-containing compound which has a maximum solubility in ethylene glycol of 1,000 ppm or more in terms of converted titanium amount when dissolved in ethylene glycol with heating at 150° C.
    Type: Application
    Filed: February 13, 2003
    Publication date: May 19, 2005
    Inventors: Hideshi Hori, Fujito Ehara, Shouji Hiraoka, Ken Maeda, Tomohiro Suzuki, Nobumasa Mukai
  • Publication number: 20040020756
    Abstract: A push-button switch 5 disposed in a switch case 3 has c-contacts and a normally close contact electrically connected with a terminal block 9 via conductors 39. Leading ends 23 of cores of a cable 7 introduced into the switch case 3 are inserted in insertion holes 49a, 49b formed in the terminal block 9. Screws 53a, 53b mounted to the terminal block 9 are tightened to press the leading ends 23 of the cores against conductive connection portions, on one side, in the insertion holes 49a, 49b, thereby to establish electrical connection.
    Type: Application
    Filed: March 11, 2003
    Publication date: February 5, 2004
    Inventors: Kenji Miyauchi, Takao Fukui, Kazuya Okada, Yasushi Kamino, Ken Maeda, Yoshio Sekino
  • Patent number: 6660949
    Abstract: An actuator of the present invention comprises an operation key 2 to be inserted into a key insertion hole formed in the safety switch, and a base 3. The operation key 2 is held on the base 3 and capable of freely swinging in two orthogonal directions. The actuator also comprises means (e.g. a guide stopper 4 and engagement spaces 34) for selectively restricting the swinging movement of the operation key 2 to either of the two directions.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 9, 2003
    Assignee: Idec Izumi Corporation
    Inventors: Yasushi Kamino, Takao Fukui, Yoshio Sekino, Kenji Miyauchi, Hideo Niinai, Tokunori Tanaka, Kazuya Okada, Ken Maeda, Yoshihiro Shima
  • Publication number: 20030184164
    Abstract: In a case where a left-hand push-button switch is ON, a second relay RL2 is electrically de-energized to open a normally close contact RL2-1 of the second relay RL2 so that a relay contact circuit RC is opened. If, in this state, a right-hand push-button switch is shifted to a second OFF state, a normally close contact R3-1 of the right-hand push-button switch is opened. Thus, a third relay RL3 is not electrically de-energized and a first and a second circuits are in cutoff until both the right-hand and the left-hand push-button switches are returned to a first OFF state.
    Type: Application
    Filed: March 6, 2003
    Publication date: October 2, 2003
    Inventors: Takao Fukui, Kenji Miyauchi, Kazuya Okada, Yasushi Kamino, Ken Maeda, Yoshio Sekino, Masaki Nobuhiro
  • Patent number: 6627830
    Abstract: A push-button switch and a teaching pendant employing the same are provided. The push-button switch ensures that a push button is capable of switching ON/OFF the switch if one of contacts thereof should fail during an operation of the switch. For achieving this object, a switch case 3 contains two c-contacts 9a, 9b each having a snap action configuration and switching mechanisms 11a, 11b for opening/closing the c-contacts 9a, 9b. When a push button 5 is depressed, the switching mechanisms 11a, 11b simultaneously open/close the c-contacts 9a, 9b for turning ON/OFF a push-button switch 1.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: September 30, 2003
    Assignee: Idec Izumi Corporation
    Inventors: Takao Fukui, Kenji Miyauchi, Kazuya Okada, Yasushi Kamino, Ken Maeda, Yoshio Sekino