Patents by Inventor Eiichi Komai
Eiichi Komai 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: 11073953Abstract: A transparent electrode member has a transparent electrode layer formed of a dispersion layer which includes a matrix and conductive nanowires dispersed therein to provide an optical adjustment region including a conductive portion having a first dispersion density and an optical adjustment portion having a second dispersion density smaller than the first dispersion density. The transparent electrode layer includes a plurality of first and second electrodes each having the optical adjustment region, and a first wire provided between and electrically connecting two adjacent first electrodes. A region of an insulating layer is formed between the first wire and the second electrodes, and between the first electrodes and the second electrodes. The first wire and a part of the first electrodes in a vicinity of the first wire are formed of a non-adjustment region of the dispersion layer including the conductive portion while lacking the optical adjustment portion.Type: GrantFiled: December 23, 2019Date of Patent: July 27, 2021Assignee: Alps Alpine Co., Ltd.Inventors: Tomoyuki Yamai, Eiichi Komai, Yuta Hiraki, Manabu Yazawa, Keita Tashiro, Hideaki Takahashi
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Patent number: 10747383Abstract: A transparent electrode member has a transparent base material, a transparent electrode placed on the first surface of the base material, and an insulating layer placed in an insulating region positioned in at least part of the circumference of a region in which the transparent electrode is placed, when viewed from the direction of the normal to the first surface. The transparent electrode has a dispersion layer that includes a matrix composed of an insulating material and also includes conductive nanowires dispersed in the matrix. The transparent electrode also has a region composed of the conductive part and regions composed of optical adjustment parts when viewed from the direction of the normal to the first surface. The conductive region has conductivity higher than the optical adjustment part. In the dispersion layer, the dispersion density of conductive nanowires in the optical adjustment part is lower than that in the conductive part.Type: GrantFiled: April 11, 2019Date of Patent: August 18, 2020Assignee: Alps Alpine Co., Ltd.Inventors: Tomoyuki Yamai, Eiichi Komai, Yuta Hiraki, Manabu Yazawa, Keita Tashiro, Hideaki Takahashi
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Publication number: 20200133416Abstract: A transparent electrode member has a transparent electrode layer formed of a dispersion layer which includes a matrix and conductive nanowires dispersed therein to provide an optical adjustment region including a conductive portion having a first dispersion density and an optical adjustment portion having a second dispersion density smaller than the first dispersion density. The transparent electrode layer includes a plurality of first and second electrodes each having the optical adjustment region, and a first wire provided between and electrically connecting two adjacent first electrodes. A region of an insulating layer is formed between the first wire and the second electrodes, and between the first electrodes and the second electrodes. The first wire and a part of the first electrodes in a vicinity of the first wire are formed of a non-adjustment region of the dispersion layer including the conductive portion while lacking the optical adjustment portion.Type: ApplicationFiled: December 23, 2019Publication date: April 30, 2020Inventors: Tomoyuki YAMAI, Eiichi KOMAI, Yuta HIRAKI, Manabu YAZAWA, Keita TASHIRO, Hideaki TAKAHASHI
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Publication number: 20190235667Abstract: A transparent electrode member has a transparent base material, a transparent electrode placed on the first surface of the base material, and an insulating layer placed in an insulating region positioned in at least part of the circumference of a region in which the transparent electrode is placed, when viewed from the direction of the normal to the first surface. The transparent electrode has a dispersion layer that includes a matrix composed of an insulating material and also includes conductive nanowires dispersed in the matrix. The transparent electrode also has a region composed of the conductive part and regions composed of optical adjustment parts when viewed from the direction of the normal to the first surface. The conductive region has conductivity higher than the optical adjustment part. In the dispersion layer, the dispersion density of conductive nanowires in the optical adjustment part is lower than that in the conductive part.Type: ApplicationFiled: April 11, 2019Publication date: August 1, 2019Inventors: Tomoyuki YAMAI, Eiichi KOMAI, Yuta HIRAKI, Manabu YAZAWA, Keita TASHIRO, Hideaki TAKAHASHI
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Publication number: 20080199331Abstract: Embodiments of the present disclosure may include a piezoelectric pump having: a piezoelectric vibrator including a main shim that may be formed of a conductive thin metal plate and a piezoelectric element layer that may be formed on the main shim; and a pair of ring-shaped support members that may support front and rear sides of a circumferential portion of the piezoelectric vibrator such that a pump chamber and an air chamber formed on the front and rear sides of the piezoelectric vibrator may be fluid-tightly sealed. The ring-shaped support members may support both sides of a circumferential portion of the piezoelectric element layer of the piezoelectric vibrator, and the piezoelectric vibrator may be vibrated to perform a pumping operation.Type: ApplicationFiled: February 13, 2008Publication date: August 21, 2008Applicant: Alps Electric Co., Ltd.Inventors: Akira SATOH, Jiro Nakajima, Eiichi Komai, Hitoshi Onishi, Michio Kamimura
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Publication number: 20080199332Abstract: Embodiments of the present disclosure may include a piezoelectric pump having: a piezoelectric vibrator whose periphery may be fluid-tightly sealed; and a pump chamber and an air chamber that may be formed on front and rear sides of the piezoelectric vibrator. The piezoelectric vibrator may include: a main shim that may be formed of a conductive thin metal plate; a plurality of piezoelectric element layers that may be formed on the main shim; and an intermediate shim that may be formed between the plurality of piezoelectric element layers and may be made of an elastic metal material having mechanical recovery. The piezoelectric vibrator may be vibrated to perform a pumping operation.Type: ApplicationFiled: February 15, 2008Publication date: August 21, 2008Applicant: ALPS ELECTRIC CO., LTDInventors: Akira SATOH, Hitoshi Onishi, Jiro Nakajima, Eiichi Komai
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Publication number: 20080038125Abstract: There is provided a piezoelectric pump including a piezoelectric vibrator formed by stacking a piezoelectric body on at least one of the front and rear surfaces of a shim made of a conductive metal thin plate, and a housing that makes the peripheral edge of the piezoelectric vibrator liquid-tight to form a pump chamber. An alternating current is applied to between the shim of the piezoelectric vibrator, and the piezoelectric body to vibrate the piezoelectric vibrator, thereby generating a pumping action. A cylindrical bent part is formed at a peripheral edge of the shim of the piezoelectric vibrator, and a liquid-tight seal member is interposed between the cylindrical bent part and the housing. As a result, the piezoelectric pump with a highly-reliable fluid-tight structure around the piezoelectric vibrator is obtained.Type: ApplicationFiled: July 24, 2007Publication date: February 14, 2008Inventors: Hitoshi Onishi, Eiichi Komai
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Patent number: 7009465Abstract: In an isolator, a common electrode is disposed on a first surface of a magnetic plate. On a second surface of the magnetic plate, first, second, and third center conductors are disposed crossing each other. The center conductors have their respective first ends connected to the common electrode, and their respective second ends connected to matching capacitors. Furthermore, the second end of the third center conductor is connected to a terminating resistor. The matching capacitor connected to the third center conductor has a Q factor of 200 or smaller and a capacitance of 18 pF or larger. The matching capacitors connected to the first and second center conductors respectively have Q factors of 400 or larger.Type: GrantFiled: March 15, 2004Date of Patent: March 7, 2006Assignee: Alps Electric Co., Ltd.Inventor: Eiichi Komai
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Patent number: 6987426Abstract: A nonreciprocal circuit element includes a magnetic plate, a common electrode on a first surface of the magnetic plate, and first, second, and third central conductors each including a pair of divisions. The three central conductors extend from the common electrode, are bent along the magnetic plate towards a second surface of the magnetic plate, and cross one another on the second surface of the magnetic plate at a predetermined angle relative to one another. The first and second central conductors are connected to input and output terminals. The nonreciprocal circuit element satisfies the relationship ?1>?2, where ?1 is the angle between the divisions of the first central conductor and ?2 is the angle between the divisions of the second central conductor, when the first central conductor is farther away from the magnetic plate than the second central conductor.Type: GrantFiled: April 14, 2004Date of Patent: January 17, 2006Assignee: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hitoshi Onishi
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Patent number: 6977559Abstract: Provided is a nonreciprocal circuit element which has increased lengths of central conductors to be compatible with miniaturization while exhibiting superior performance. In the nonreciprocal circuit element, a first yoke has a rectangular upper plate, a pair of side plates bent downward from sides of the upper plate facing each other, and notch parts formed at the central portion of the pair of side plates. Ends of a magnet are placed within the notch parts. Thus, the magnet can be enlarged and a ferrite member provided corresponding thereto can also be enlarged. Accordingly, the lengths of conductors of central conductors mounted on the ferrite member are increased, thereby achieving high performance while not adversely affecting miniaturization.Type: GrantFiled: May 10, 2004Date of Patent: December 20, 2005Assignee: Alps Electric Co., Ltd.Inventors: Yuichi Shimizu, Takamitsu Shibayama, Eiichi Komai
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Patent number: 6943642Abstract: A nonreciprocal circuit element includes a magnetic plate having through holes; center conductors crossing each other at a predetermined angle on a side associated with a first surface of the magnetic plate; and a common electrode disposed on a side associated with a second surface of the magnetic plate and connected to the center conductors via the through holes.Type: GrantFiled: September 15, 2003Date of Patent: September 13, 2005Assignee: Alps Electric Co., Ltd.Inventors: Kinshiro Takadate, Toshio Takahashi, Eiichi Komai, Hitoshi Onishi
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Patent number: 6876267Abstract: In a nonreciprocal circuit device, receiving surfaces for bending first and second line conductors are formed at the respective ends of the confronting two sides of a magnetic substrate, the first and second line conductors are bent to the other surface of the magnetic substrate through the receiving surfaces thereof as well as disposed on the other surface of the magnetic substrate along the diagonal lines.Type: GrantFiled: October 28, 2002Date of Patent: April 5, 2005Assignee: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hitoshi Onishi
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Patent number: 6876269Abstract: A nonreciprocal circuit element includes a magnetic assembly including a ferrite magnetic body, a common electrode, and three central conductors; capacitors connecting to the respective central conductors; a permanent magnet which applies a DC bias magnetic field to the magnetic body; and a metal case which accommodates the magnetic assembly, the capacitors, and the permanent magnet, the metal case functioning as a magnetic yoke. The saturation magnetic flux density of at least a portion of the metal case and the residual magnetic flux density of the permanent magnet have negative temperature coefficients. Moreover, the portion of the metal case is composed of a magnetic material having a larger absolute value of the temperature coefficient of the saturation magnetic flux density than the absolute value of the temperature coefficient of the residual magnetic flux density of the permanent magnet in the range of ?35° C. to +85° C.Type: GrantFiled: July 25, 2003Date of Patent: April 5, 2005Assignee: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hiroki Sato, Hitoshi Onishi
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Patent number: 6828872Abstract: A yoke main body formed of an upper yoke and a lower yoke accommodates therein a magnetic substrate, a plurality of line conductors, a plurality of capacitor substrates, a magnetic member and a spacer member. The line conductors are connected to one another on one of the surface sides of the magnetic substrate, and each end of the line conductors put one upon another on a main surface side of the magnetic substrate is connected to the capacitor substrate. A gap portion for magnetically insulating the upper yoke and the lower yoke is defined between them.Type: GrantFiled: May 19, 2003Date of Patent: December 7, 2004Assignee: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hitoshi Onishi, Toshio Takahashi
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Publication number: 20040227579Abstract: Provided is a nonreciprocal circuit element which has increased lengths of central conductors to be compatible with miniaturization while exhibiting superior performance. In the nonreciprocal circuit element, a first yoke has a rectangular upper plate, a pair of side plates bent downward from sides of the upper plate facing each other, and notch parts formed at the central portion of the pair of side plates. Ends of a magnet are placed within the notch parts. Thus, the magnet can be enlarged and a ferrite member provided corresponding thereto can also be enlarged. Accordingly, the lengths of conductors of central conductors mounted on the ferrite member are increased, thereby achieving high performance while not adversely affecting miniaturization.Type: ApplicationFiled: May 10, 2004Publication date: November 18, 2004Applicant: Alps Electric Co., Ltd.Inventors: Yuichi Shimizu, Takamitsu Shibayama, Eiichi Komai
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Publication number: 20040227473Abstract: A non-reciprocal circuit element and a method for manufacturing the same are provided to controls a magnetic flux density between first and second yokes and reduce variation in resonant frequency. The non-reciprocal circuit element includes a first yoke for covering a magnetic, and a second yoke which is disposed below the ferrite member and forms a closed magnetic circuit together with the first yoke. A gap capable of controlling the magnetic flux is provided between the first and second yokes, making it possible to change the gap width of the gap G, thereby adjusting the magnetic flux between the first and second yokes.Type: ApplicationFiled: May 10, 2004Publication date: November 18, 2004Applicant: Alps Electric Co., Ltd.Inventors: Yuichi Shimizu, Takamitsu Shibayama, Eiichi Komai
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Publication number: 20040207480Abstract: A nonreciprocal circuit element includes a magnetic plate, a common electrode on a first surface of the magnetic plate, and first, second, and third central conductors each including a pair of divisions. The three central conductors extend from the common electrode, are bent along the magnetic plate towards a second surface of the magnetic plate, and cross one another on the second surface of the magnetic plate at a predetermined angle relative to one another. The first and second central conductors are connected to input and output terminals. The nonreciprocal circuit element satisfies the relationship &thgr;1>&thgr;2, where &thgr;1 is the angle between the divisions of the first central conductor and &thgr;2 is the angle between the divisions of the second central conductor, when the first central conductor is farther away from the magnetic plate than the second central conductor.Type: ApplicationFiled: April 14, 2004Publication date: October 21, 2004Applicant: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hitoshi Onishi
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Publication number: 20040183618Abstract: In an isolator, a common electrode is disposed on a first surface of a magnetic plate. On a second surface of the magnetic plate, first, second, and third center conductors are disposed crossing each other. The center conductors have their respective first ends connected to the common electrode, and their respective second ends connected to matching capacitors. Furthermore, the second end of the third center conductor is connected to a terminating resistor. The matching capacitor connected to the third center conductor has a Q factor of 200 or smaller and a capacitance of 18 pF or larger. The matching capacitors connected to the first and second center conductors respectively have Q factors of 400 or larger.Type: ApplicationFiled: March 15, 2004Publication date: September 23, 2004Applicant: Alps Electric Co., Ltd.Inventor: Eiichi Komai
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Publication number: 20040066248Abstract: In a non-reciprocal circuit element according to the present invention, a common electrode is disposed on one surface of a plate-like magnetic material, three central conductors protruding in respective directions from the periphery of the common electrode are folded over the other surface of the plate-like magnetic material so as to wrap around the plate-like magnetic material, and the central conductors cross each other at a predetermined angle on the other surface of the plate-like magnetic material. One of the central conductors that functions as an input is disposed in a position closer to the other surface of the plate-like magnetic material as compared with the other central conductors and directly contacts the plate-like magnetic material.Type: ApplicationFiled: September 26, 2003Publication date: April 8, 2004Applicant: Alps Electric Co., Ltd.Inventor: Eiichi Komai
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Publication number: 20040041647Abstract: A nonreciprocal circuit element includes a magnetic assembly including a ferrite magnetic body, a common electrode, and three central conductors; capacitors connecting to the respective central conductors; a permanent magnet which applies a DC bias magnetic field to the magnetic body; and a metal case which accommodates the magnetic assembly, the capacitors, and the permanent magnet, the metal case functioning as a magnetic yoke. The saturation magnetic flux density of at least a portion of the metal case and the residual magnetic flux density of the permanent magnet have negative temperature coefficients. Moreover, the portion of the metal case is composed of a magnetic material having a larger absolute value of the temperature coefficient of the saturation magnetic flux density than the absolute value of the temperature coefficient of the residual magnetic flux density of the permanent magnet in the range of −35° C. to +85° C.Type: ApplicationFiled: July 25, 2003Publication date: March 4, 2004Applicant: Alps Electric Co., Ltd.Inventors: Eiichi Komai, Hiroki Sato, Hitoshi Onishi