Patents by Inventor Kunihiko Nakajima
Kunihiko Nakajima 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: 11984533Abstract: A light emitting device according to an embodiment of the present disclosure includes: a first layer including Alx2Inx1Ga(1-x1-x2) N (0<x1<1, 0?x2<1); a second layer that is provided on the first layer and includes Aly2Iny1Ga(1-y1-y2) N (0<y1<1, 0?y2<1) that is lattice relaxed with respect to the first layer; and a third layer that is provided on the second layer, includes Alz2Inz1Ga(1-z1-z2) N (0<z1<1, 0?z2<1) that is lattice relaxed with respect to the second layer, and includes an active layer. A lattice constant aGAN of GaN in an in-plane direction, a lattice constant al of the first layer in an in-plane direction, a lattice constant a2 of the second layer in an in-plane direction, and a lattice constant a3 of the third layer in an in-plane direction have a relationship of aGAN<a2<a1, a3.Type: GrantFiled: July 1, 2019Date of Patent: May 14, 2024Assignee: Sony CorporationInventors: Kunihiko Tasai, Hiroshi Nakajima, Hidekazu Kawanishi, Katsunori Yanashima
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Patent number: 8390094Abstract: An inexpensive variable inductor has inductance value continuously changeable without reducing a Q value. When a control voltage is applied to a control terminal of a MOS transistor from a power supply, a continuity region is formed in a channel, and a region between main terminals becomes conductive. When the control voltage is changed, length of the continuity region in the channel is changed. This changes length of a path area of an induced current, flowing in an induced current film. Thus, the amount of induced current is increased or decreased. Therefore, when the control voltage of the MOS transistor is changed, the inductance value of the coil is continuously changed.Type: GrantFiled: September 22, 2011Date of Patent: March 5, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Kunihiko Nakajima, Hideo Ishihara, Yuichi Sasajima
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Publication number: 20120018842Abstract: An inexpensive variable inductor has inductance value continuously changeable without reducing a Q value. When a control voltage is applied to a control terminal of a MOS transistor from a power supply, a continuity region is formed in a channel, and a region between main terminals becomes conductive. When the control voltage is changed, length of the continuity region in the channel is changed. This changes length of a path area of an induced current, flowing in an induced current film. Thus, the amount of induced current is increased or decreased. Therefore, when the control voltage of the MOS transistor is changed, the inductance value of the coil is continuously changed.Type: ApplicationFiled: September 22, 2011Publication date: January 26, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Kunihiko NAKAJIMA, Hideo ISHIHARA, Yuichi SASAJIMA
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Patent number: 8053864Abstract: An inexpensive variable inductor has inductance value continuously changeable without reducing a Q value. When a control voltage is applied to a control terminal of a MOS transistor from a power supply, a continuity region is formed in a channel, and a region between main terminals becomes conductive. When the control voltage is changed, length of the continuity region in the channel is changed. This changes length of a path area of an induced current, flowing in an induced current film. Thus, the amount of induced current is increased or decreased. Therefore, when the control voltage of the MOS transistor is changed, the inductance value of the coil is continuously changed.Type: GrantFiled: September 22, 2008Date of Patent: November 8, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Kunihiko Nakajima, Hideo Ishihara, Yuichi Sasajima
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Patent number: 7692494Abstract: A variable frequency amplifier suffering less deterioration of strain characteristic and capable of operating at plural frequencies is disclosed. In one aspect, a changeable amplifier comprises an amplifying element, a changeable matching circuit disposed at an input side of the amplifying element and including a first variable capacity element connected in series with a signal conductor and a second variable capacity element connected in parallel with the signal conductor, and a control circuit for controlling the changeable matching circuit. Based on a feedback signal, the control circuit applies DC bias voltages to the first variable capacity element and the second variable capacity element of the changeable matching circuit and also applies thereto a correction signal.Type: GrantFiled: December 4, 2007Date of Patent: April 6, 2010Assignee: Taiyo Yuden Co., Ltd.Inventors: Tsuyoshi Ogino, Fumitaka Iizuka, Kunihiko Nakajima
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Publication number: 20090146636Abstract: An inexpensive variable inductor has inductance value continuously changeable without reducing a Q value. When a control voltage is applied to a control terminal of a MOS transistor from a power supply, a continuity region is formed in a channel, and a region between main terminals becomes conductive. When the control voltage is changed, length of the continuity region in the channel is changed. This changes length of a path area of an induced current, flowing in an induced current film. Thus, the amount of induced current is increased or decreased. Therefore, when the control voltage of the MOS transistor is changed, the inductance value of the coil is continuously changed.Type: ApplicationFiled: September 22, 2008Publication date: June 11, 2009Applicant: Taiyo Yuden Co., Ltd.Inventors: Kunihiko Nakajima, Hideo Ishihara, Yuichi Sasajima
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Patent number: 7126442Abstract: A phase shifter comprises: a phase shift unit including a reactance unit having a first variable capacitance device, and a susceptance unit having a second variable capacitance device, T-connected to the reactance unit; and a control unit for outputting a control signal continuously changing the capacitance of the first variable capacitance device and the second variable capacitance device to the phase shift unit. The amount of phase shift can be continuously changed by changing these variable capacitance devices continuously. Moreover, these devices can be formed on a semiconductor, thereby realizing low-voltage driving and high-speed response. Furthermore, the variance of impedance can be prevented by adjusting these two variable capacitance devices, whereby transmission efficiency can be improved.Type: GrantFiled: July 2, 2004Date of Patent: October 24, 2006Assignee: Taiyo Yuden Co., Ltd.Inventors: Kunihiko Nakajima, Kenichi Ohta, Yoshiki Iwazaki
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Publication number: 20050007213Abstract: A phase shifter comprises: a phase shift unit including a reactance unit having a first variable capacitance device, and a susceptance unit having a second variable capacitance device, serially connected to the reactance unit; and a control unit for outputting a control signal continuously changing the capacitance of the first variable capacitance device and the second variable capacitance device to the phase shift unit. The amount of phase shift can be continuously changed by changing these variable capacitance devices continuously. Moreover, these devices can be formed on a semiconductor, thereby realizing low-voltage driving and high-speed response.Type: ApplicationFiled: July 2, 2004Publication date: January 13, 2005Inventors: Kunihiko Nakajima, Kenichi Ohta, Yoshiki Iwazaki
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Patent number: 6550272Abstract: In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation.Type: GrantFiled: April 25, 2002Date of Patent: April 22, 2003Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Kunihiko Nakajima, Kenichi Saitou, Hideharu Arai
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Patent number: 6536229Abstract: A steam type absorption refrigerator which circulates absorption fluid from an absorber (1), through a low-temperature heat exchanger (3), a low-temperature regenerator (4), a high-temperature heat exchanger (6), a steam heating type high-temperature regenerator (7), the high-temperature heat exchanger (6) and the low-temperature heat exchanger (3) in order, back to the absorber (1) comprising, a fluid concentrating boiler (10) which is disposed between the high-temperature regenerator (7) and the high-temperature heat exchanger (6) concentrating the absorption fluid under heat, and a pump (13) which extracts a part or all of the concentrated absorption fluid from the high-temperature regenerator (7) and feeds it to the fluid concentrating boiler (10), wherein the fluid concentrating boiler is connected to the high-temperature heat exchanger (6) so that the absorption fluid concentrated under heat is returned to the heating side of the high-temperature heat exchanger (6) and is also connected to the high-tempType: GrantFiled: March 6, 2001Date of Patent: March 25, 2003Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Syuzo Takabatake, Kunihiko Nakajima, Osamu Ohishi, Kenichi Saitou, Masuomi Ohta
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Publication number: 20020112504Abstract: In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation.Type: ApplicationFiled: April 25, 2002Publication date: August 22, 2002Inventors: Kunihiko Nakajima, Kenichi Saitou, Hideharu Arai
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Patent number: 6408643Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.Type: GrantFiled: March 22, 2001Date of Patent: June 25, 2002Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Syuzo Takabatake, Kunihiko Nakajima, Kenichi Saitou, Hideharui Arai, Masuomi Ohta
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Publication number: 20020069666Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.Type: ApplicationFiled: March 22, 2001Publication date: June 13, 2002Applicant: KAWASAKI THERMAL ENGINEERING CO., LTD.Inventors: Syuzo Takabatake, Kunihiko Nakajima, Kenichi Saitou, Hideharui Arai, Masuomi Ohta
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Patent number: 6393863Abstract: In an absorption chiller/absorption chiller-heater wherein a pressure rise preventing means such as a safety valve, rapture disk or breakable plate is disposed in a high temperature regenerator or in the refrigerant vapor piping from the high temperature regenerator, with the discharge opening of the pressure rise preventing means being open to the atmosphere, in order to prevent the pressure rise in the high temperature regenerator, the discharge opening of safety valve is connected to low pressure units such as the low temperature regenerator through pressure relief piping so that, when the safety valve is activated, the refrigerant vapor and absorption solution of the high pressure side will be discharged to low pressure units such as the low temperature regenerator designed so as to generally maintain a vacuum therein during operation.Type: GrantFiled: November 8, 2000Date of Patent: May 28, 2002Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Kunihiko Nakajima, Kenichi Saitou, Hideharu Arai
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Patent number: 5775283Abstract: A number of embodiments of induction systems for internal combustion engines that permit operation on the Miller cycle without introducing pumping losses or by substantially minimizing the pumping losses. Basically, the system provides a variable volume air chamber that supplies the major portion of the intake charge or all of the intake charge under low-speed, low-load conditions. Various valving and variable volume chamber constructions are illustrated. In addition, embodiments using air-assisted fuel injection are also disclosed.Type: GrantFiled: May 25, 1995Date of Patent: July 7, 1998Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Seiji Sawai, Kunihiko Nakajima, Jiro Watase
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Patent number: 5766504Abstract: In order to depress a crystallization temperature of an absorbent composition for an absorption refrigeration system without depressing vapor absorption ability, cesium chloride is added to an alkaline solution containing lithium bromide as a main component, in an amount of 0.01 to 15% by weight, based on the weight of an aqueous 64% lithium bromide solution.Type: GrantFiled: June 27, 1996Date of Patent: June 16, 1998Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Kawasaki Thermal Engineering Co., Ltd.Inventors: Takatoshi Shoji, Yoshiaki Takatani, Akihiro Murakami, Kunihiko Nakajima
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Patent number: 5489622Abstract: A curable silicone composition comprising an addition reaction product of an organopolysiloxane having amino groups at both ends of its molecule and a vinyl group-containing isocyanate, and a moisture-curing or anaerobic-curing catalyst and a photopolymerization catalyst.The silicone composition has high photocurability and moisture- or anaerobic-curability, easy to manufacture and easy to handle.Type: GrantFiled: May 26, 1994Date of Patent: February 6, 1996Assignee: Three Bond Co., Ltd.Inventors: Osamu Hara, Yasuo Hanazuka, Kunihiko Nakajima, Kohichi Naruse
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Patent number: 5477696Abstract: A temperature t.sub.hg of a solution 23a heated and concentrated in a generator 5, an outlet temperature t.sub.r of chilled water 21a flowed from an evaporator 1, and an outlet temperature t.sub.r of a flow of cooling water 22 fed from an absorber 2 to a condenser 4 are detected. A maximum allowable heating quantity Q* of generator 5 is calculated by means of a temperature t.sub.hg, t.sub.r and t.sub.c. A present heating quantity Q of generator 5 is controlled so as not to exceed a calculated maximum allowable heating quantity Q*. It is possible to prevent a heating quantity of the generator 5 from being excessively restricted and to prevent solution 23a from crystallizing at an outlet 6a of the heat exchanger 6. Further, loss of heat which occurs owing to returning generated refrigerant 24 to the concentrated solution 23a is obviated.Type: GrantFiled: November 24, 1993Date of Patent: December 26, 1995Assignee: Kawaju Reinetsu Kogyo Kabushiki KaishaInventors: Shuhzo Takahata, Kunihiko Nakajima
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Patent number: 5397812Abstract: An adhesive composition for being applied to at least one of thread contact faces of screw members so as to stick said thread contact faces to each other in engaging the screw members with each other for the purpose of locking and sealing the engaged screw members, in which micro-capsules enclosing at least a reactive monomer of a reactive adhesive composition comprising said monomer, a polymerization initiator of the aforesaid monomer and/or an activator of the aforesaid polymerization initiator is dispersed in a binder comprising a photo-hardening resin composition.Type: GrantFiled: March 9, 1993Date of Patent: March 14, 1995Assignee: Three Bond Co., Ltd.Inventors: Ikuzo Usami, Makoto Kurihara, Minami Hanada, Kunihiko Nakajima
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Patent number: 5384340Abstract: A silicone composition having superior moisture- and photocurability and easy to manufacture is provided.A polyorganosiloxane having primary amino, (meth)acryl or epoxy groups at both ends is reacted with a compound having two to three hydrolyzable groups and also having (meth)acryl or epoxy group in the case where the said end groups are primary amino groups, or also having a primary amino group in the case where the said end groups are (meth)acryl or epoxy groups, then the resulting reaction product is reacted with a compound having vinyl group and (meth)acryl, epoxy or isocyanato group, to prepare a polysiloxane having hydrolyzable groups and vinyl group, and this polysiloxane is combined with a photopolymerization catalyst and a moisture-curing catalyst.Type: GrantFiled: April 20, 1993Date of Patent: January 24, 1995Assignee: Three Bond Co., Ltd.Inventors: Osamu Hara, Kunihiko Nakajima