Abstract: Provided are a piezoelectric material without using lead or an alkali metal, the piezoelectric material having a stable crystal structure in a wide temperature range, high insulation property, and high piezoelectric property, and a piezoelectric element using the piezoelectric material, in which the piezoelectric material is made of a metal oxide having a tetragonal crystal structure and expressed by Ba(SixGeyTiz)O3 (here, 0?x?1, 0?y?1, and 0?z?0.5), the piezoelectric element includes the piezoelectric material and a pair of electrodes sandwiching the piezoelectric material, and at least one of the pair of electrodes is made of SrRuO3 or Ni.
Type:
Application
Filed:
May 22, 2009
Publication date:
December 24, 2009
Applicants:
Canon Kabushiki Kaisha, Tokyo Institute of Technology, Kyoto University, University of Yamanashi, National Institute of Advanced Industrial Science and Technology, Tokyo University of Science Educational Foundation Administrative Organization
Abstract: To provide production methods for a 3-D mold, a finely processed product, and a fine pattern molded product in which the depth and the line width can be formed with high precision, a 3-D mold, a finely processed product, a fine-pattern molded product, and an optical element formed with high precision.
Type:
Grant
Filed:
February 21, 2006
Date of Patent:
December 8, 2009
Assignee:
Tokyo University of Science Educational Foundation Administrative Organization
Abstract: SmCo-based alloy nanoparticles composed mainly of a SmCo-based alloy containing Sm and Co as constituent elements, wherein the content of metal elements other than Sm and Co is 0.05-20 wt % with respect to the SmCo-based alloy.
Type:
Application
Filed:
March 4, 2009
Publication date:
October 15, 2009
Applicants:
TDK Corporation, Tokyo University of Science Educational Foundation Administrative Organization
Abstract: Provided is a wearable joint driving device in which a plurality of frame members are attached to a wearing body so as to be in contact with the outer surface of the wearing body. Between the frame members, there is mounted a fluid pressure type actuator. The fluid pressure type actuator has an expansion/contraction member and a net-like covering member covering the outer periphery of the expansion/contraction member. The fluid pressure type actuator undergoes a reduction in length through expansion of the expansion/contraction member to thereby generate a driving force. The frame members have a predetermined level of rigidity.
Type:
Grant
Filed:
March 18, 2004
Date of Patent:
August 19, 2008
Assignees:
Hitachi Medical Corporation, Tokyo University of Science
Abstract: A quantum Turing machine constituted using a quantum bit created by localizing a phase difference soliton S between superconducting electrons existing in each of multiple of bands in a ring R0 that includes a ring main body R1 formed of a superconductor, and well-shaped portions W1, W2 formed with a reduced line-width at at least two positions on the ring main body R1, can easily constitute a quantum bit, can surely execute a basic logical operation, has multiple-bit capability and, moreover, can ensure sufficient time for executing a quantum algorithm.
Type:
Grant
Filed:
September 2, 2004
Date of Patent:
July 15, 2008
Assignees:
National Institute of Advanced Industrial Science and Technology, Japan Science and Technology Agency, Tokyo University of Science
Abstract: There is disclosed a tuning circuit having a coil and a capacitor comprises a resistance-adjustment circuit connected in parallel with the coil and the capacitor. The resistance-adjustment circuit changes a resistance of the tuning circuit when resonant. The resistance-adjustment circuit comprises a series circuit of a resistor and a switching element having an ON-resistance smaller than the resistance of the resistor, and turning on/off the switching element causes the resistance of the tuning circuit when resonant to change.
Type:
Grant
Filed:
November 30, 2004
Date of Patent:
February 12, 2008
Assignees:
Sanyo Electric Co., Ltd., Tokyo University of Science
Abstract: The corresponding ?-aminooxy ketone is manufactured with a high yield and a high enantioselectivity. A manufacturing method for an optically active ?-aminooxy ketone derivative expressed by formula (1), wherein a ketone expressed by formula (2) is caused to react with a nitroso compound expressed by formula (3) in the presence of a proline derivative expressed by formula (4). In the formula, R1 and R2 respectively denote an alkyl, alkenyl or alkynyl group, and R1 and R2 may be linked to form a ring. R3 denotes an aryl, heterocyclic, alkyl, alkenyl or alkynyl group. A denotes a hydrogen atom, alkoxy group, aryloxy group, acyloxy group or silyloxy group which may have a substituent.
Type:
Grant
Filed:
August 20, 2004
Date of Patent:
October 9, 2007
Assignee:
Tokyo University of Science, Center for Science and Technology Exchange
Abstract: A quantum Turing machine constituted using a quantum bit created by localizing a phase difference soliton S between superconducting electrons existing in each of multiple of bands in a ring R0 that includes a ring main body R1 formed of a superconductor, and well-shaped portions W1, W2 formed with a reduced line-width at at least two positions on the ring main body R1, can easily constitute a quantum bit, can surely execute a basic logical operation, has multiple-bit capability and, moreover, can ensure sufficient time for executing a quantum algorithm.
Type:
Application
Filed:
September 2, 2004
Publication date:
May 31, 2007
Applicants:
National Inst of Adv Industrial Science and Tech., JAPAN SCIENCE AND TECHNOLOGY AGENCY, Tokyo University of Science
Abstract: There is disclosed a tuning circuit having a coil and a capacitor comprises a resistance-adjustment circuit connected in parallel with the coil and the capacitor. The resistance-adjustment circuit changes a resistance of the tuning circuit when resonant. The resistance-adjustment circuit comprises a series circuit of a resistor and a switching element having an ON-resistance smaller than the resistance of the resistor, and turning on/off the switching element causes the resistance of the tuning circuit when resonant to change.
Type:
Application
Filed:
November 30, 2004
Publication date:
July 7, 2005
Applicants:
Sanyo Electric Co., Ltd., Tokyo University of Science