Patents by Inventor Tomoyuki Nakamura
Tomoyuki Nakamura 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: 8673798Abstract: A dielectric ceramic and a laminated ceramic capacitor using the dielectric ceramic are achieved which provide favorable thermal shock resistance without damaging properties or characteristics such as dielectric properties, insulation properties, temperature characteristics, and characteristics in high temperature loading, even when the dielectric layers are reduced in thickness and the number of stacked layers increased. The dielectric ceramic contains, as its main constituent, a barium titanate based compound represented by the general formula ABO3, and a crystalline oxide containing Al, Mg, and Si is present as secondary phase grains in the dielectric ceramic.Type: GrantFiled: August 1, 2011Date of Patent: March 18, 2014Assignee: Murata Manufacturing Co., Ltd.Inventor: Tomoyuki Nakamura
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Publication number: 20140049673Abstract: A zoom lens includes, in order from an object side: a first positive lens unit not moving for zooming; a second negative lens unit moving during zooming; a third positive lens unit moving during zooming; a fourth positive lens unit moving during zooming; and a fifth positive lens unit not moving for zooming. Each of the lens units includes positive and negative lenses, and satisfies 10<?p??n<54, ?1<?2w<?0.05, ?5<?2t<?1, and ?1<?34z2<?0.3, where ?p is average Abbe constant of the positive lens of the fourth unit, ?n an average Abbe constant of the negative lens of the fourth unit, ?2w a magnification of the second unit at wide angle end, ?2t a magnification of the second unit at telephoto end, and ?34z2 a magnification of a combined lens unit including the third and fourth unit at a zoom position where the magnification of the second unit is ?1.Type: ApplicationFiled: August 2, 2013Publication date: February 20, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Tomoyuki Nakamura
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Publication number: 20140043725Abstract: A method for manufacturing a laminated ceramic capacitor by firing a laminated body which includes dielectric ceramic layers containing a dielectric ceramic raw material powder and internal electrodes. The firing is carried out in accordance with a temperature profile in which the average rate of temperature rise is 40° C./second or more from room temperature to a maximum temperature. The dielectric ceramic raw material powder contains a BaTiO3 system as its main constituent, and contains R (R is Sc, etc.), M (M is Mn, etc.), and Mg as accessory constituents, in which, when the total amount of the accessory constituents contained is denoted by D parts by mol with respect to 100 parts by mol of the main constituent, an the specific surface area of the main constituent is denoted by E m2/g, then D/E is 0.2 to 0.8.Type: ApplicationFiled: October 25, 2013Publication date: February 13, 2014Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Makoto Matsuda, Tomoyuki Nakamura
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Patent number: 8609564Abstract: A method for manufacturing a laminated ceramic capacitor by firing a laminated body which includes dielectric ceramic layers containing a dielectric ceramic raw material powder and internal electrodes. The firing is carried out in accordance with a temperature profile in which the average rate of temperature rise is 40° C./second or more from room temperature to a maximum temperature. The dielectric ceramic raw material powder contains a BaTiO3 system as its main constituent, and contains R (R is Sc, etc.), M (M is Mn, etc.), and Mg as accessory constituents, in which, when the total amount of the accessory constituents contained is denoted by D parts by mol with respect to 100 parts by mol of the main constituent, an the specific surface area of the main constituent is denoted by E m2/g, then D/E is 0.2 to 0.8.Type: GrantFiled: February 23, 2012Date of Patent: December 17, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Makoto Matsuda, Tomoyuki Nakamura
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Patent number: 8593736Abstract: A zoom lens includes, in order from an object side: a first lens unit having a positive refractive power which does not move for varying magnification; a second lens unit having a negative refractive power which moves for varying magnification; a third lens unit having a positive refractive power which moves for varying magnification; and a fourth lens unit having a positive refractive power which does not move for varying magnification, in which: the first lens unit includes a first sub lens unit which does not move for focusing and a second sub lens unit having a positive refractive power which moves for focusing; the first sub lens unit includes three lenses having negative, positive, and positive refractive powers; and each of the elements is appropriately set.Type: GrantFiled: April 4, 2012Date of Patent: November 26, 2013Assignee: Canon Kabushiki KaishaInventor: Tomoyuki Nakamura
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Publication number: 20130300954Abstract: The adhesive sheet for an image display device includes a structural unit derived from the following general formula (a), wherein the glass transition temperature is from 10 to 50° C., and tan ? at 40 to 80° C. is from 0.5 to 1.1, The adhesive sheet for an image display device, an image display device, and an adhesive resin composition for an image display can be provided, which are useful for the prevention of cracking, the attenuation of the stress and the impact, that have excellent transparency, which improve the fog and the flicker in an image displayed on the screen, and which reduce the bubbles, the sullage, and the detachment, particularly under high temperature condition (for example, 80° C. or more) or under high-temperature and humidity condition (for example, 85° C./85% RH). In the formula, X is a hydrogen atom or a methyl group.Type: ApplicationFiled: December 9, 2011Publication date: November 14, 2013Applicant: Hitachi Chemical Company, LTDInventors: Seiji Sunohara, Junichi Imaizumi, Tomoyuki Nakamura, Hajime Nakamura, Kouji Yamazaki, Hiroaki Takahashi, Kazuhiro Makishima, Kenichi Shinya, Megumi Tomomatsu
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Publication number: 20130271630Abstract: In a zoom lens including a positive first lens unit, negative second lens unit, positive third lens unit, and positive fourth lens unit, the fourth lens unit includes a 41 lens group, a 42 lens group, and a 43 lens group. the lateral magnification of the third lens unit at a wide-angle end when an infinite object is focused, the focal length of the fourth lens unit, the lens configuration length of the fourth lens unit, the air interval between the 41 and 42 lens groups, the air interval between the 42 and 43 lens groups, the focal length of the 42 lens group, the average values of the Abbe constants and partial dispersion ratios of positive lens of the 42 lens group, the average values of the Abbe constants and partial dispersion ratios of negative lenses of the 42 lens group, and the like are appropriately set.Type: ApplicationFiled: April 12, 2013Publication date: October 17, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Tomoyuki Nakamura
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Publication number: 20130249084Abstract: A semiconductor device includes an interlayer insulating film containing Si, O, C, and H, an under-bump metal film disposed over the interlayer insulating film and containing Ni, and a bump electrode disposed over the under-bump metal film. In the interlayer insulating film, a ratio of a peak height of Si—CH3 near a wave number 1270 cm?1 to a peak height of Si—O near a wave number 1030 cm?1 obtained by Fourier-transform infrared spectroscopy (FTIR) is 0.15 or greater and 0.27 or less. A ratio of a peak height of Si—CH2—Si near a wave number 1360 cm?1 to the peak height of Si—CH3 near the wave number 1270 cm?1 is 0.031 or greater.Type: ApplicationFiled: February 14, 2013Publication date: September 26, 2013Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Tatsuya Usami, Tomoyuki Nakamura, Naoki Fujimoto
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Patent number: 8526165Abstract: A dielectric ceramic (and capacitor containing it) balancing high temperature load characteristics and temperature characteristics of capacitance even when layer thickness is less than 1 ?m has a mixture of different crystal grains containing a barium titanate compound as the main constituent. The first crystal grains can contain rare earth element solid solution region 1 at the surface layer section. The second crystal grains have a core-shell structure including a shell section having a rare earth element solid solution present. The first and second crystal grains are 12% to 84% f and 16% to 88%, respectively, of the total number of crystal grains.Type: GrantFiled: March 3, 2011Date of Patent: September 3, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Tomonori Muraki, Tomoyuki Nakamura, Makoto Matsuda, Akihiro Shiota
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Patent number: 8526164Abstract: A laminated ceramic capacitor which provides favorable properties and characteristics such as dielectric characteristics, insulation properties, temperature characteristics, and high temperature load characteristics and provides favorable thermal shock resistance, even when dielectric ceramic layers are reduced in layer thickness to increase the number of layers has dielectric ceramic layers containing, as their main constituent, a barium titanate based compound represented by the general formula ABO3 and internal electrodes containing Ni as their main constituent, which are stacked alternately. A crystalline oxide containing at least Mg and Li is present in at least either one of the internal electrodes and the dielectric ceramic layers. The crystalline oxide is preferably present mostly in contact with Ni in the internal electrodes.Type: GrantFiled: March 3, 2011Date of Patent: September 3, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Tomoyuki Nakamura, Tomonori Muraki, Makoto Matsuda, Akihiro Shiota
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Publication number: 20130224425Abstract: A pressure-sensitive adhesive sheet 1 for an image display device, comprising a film-shaped pressure-sensitive adhesive layer 2 and a pair of base material layers 3 and 4 laminated so as to sandwich the adhesive layer 2, wherein outer edges 3a and 4a of the base material layers 3 and 4 project more outward than an outer edge 2a of the pressure-sensitive adhesive layer 2, and the pressure-sensitive adhesive layer 2 is formed from a pressure-sensitive adhesive resin composition comprising a structural unit derived from an alkyl (meth)acrylate in which the number of carbon atoms of an alkyl group is 4 to 18, and has a shear storage modulus at 25° C. of 30 to 150 kPa.Type: ApplicationFiled: February 22, 2013Publication date: August 29, 2013Applicant: HITACHI CHEMICAL COMPANY, LTD.Inventors: Kouji YAMAZAKI, Kenichi SHINYA, Tomoyuki NAKAMURA, Satoshi OHKAWA, Junichi IMAIZUMI, Hiroaki TAKAHASHI
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Publication number: 20130071596Abstract: An adhesive film includes a film-like adhesive layer and a pair of separators sandwiching the adhesive layer. The outer edges of both separators extend outward beyond the outer edge of the adhesive layer, and a blade is used to form a notch on the adhesive layer side of the heavy release separator, along the outer edge of the adhesive layer. The thickness of the heavy release separator is between 50 ?m and 200 ?m, the average notch depth is between 5 ?m and 45 ?m and the standard deviation for the notch depth is no greater than 15 ?m. Specifying the notch depth allows complete cutting of the adhesive layer with the blade, while also limiting release problems between the heavy release separator and the adhesive layer.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Inventors: Kouhei HORIUCHI, Michio Uruno, Hiroaki Takahashi, Tomoyuki Nakamura, Mitsuyoshi Shimamura
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Patent number: 8395882Abstract: In a dielectric ceramic having crystal grains and containing a perovskite in which the A site contains Ba and the B site contains Ti. as a main component, the crystal orientations are aligned in substantially the same direction within the crystal grains. Some of Ba may be replaced with Ca and/or Sr, and some of Ti may be replaced with Zr and/pr Hf. This achieves a dielectric ceramic which has a high dielectric constant and has favorable AC electric field characteristics in which the change in dielectric constant is small even with changes in applied electric field.Type: GrantFiled: July 27, 2010Date of Patent: March 12, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Hironori Suzuki, Hideyasu Onishi, Kazuo Muto, Tomoyuki Nakamura
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Publication number: 20130059710Abstract: It is intended to mount and remove the heat seal bar 2 without difficulty. A receiving recess 7 formed in the heat seal bar 2 while an insert 8 is received in and fixed to the receiving recess 7. A tension pin 16 is supported by the heater unit 1, inserted into the adjacent recess 11 and then inserted into the axial groove 9 through the axial opening 10. An actuator is provided at the heater unit 1, the tension pin 16 being pulled and moved axially thereof by the actuator 19 so that the head 17 should be engaged with the inward protrusion 18. The tension pin 16 and the insert 8 cooperate with each other to mount the heat seal bar 2 on the heater unit 1.Type: ApplicationFiled: August 21, 2012Publication date: March 7, 2013Applicant: Totani CorporationInventors: Mikio Totani, Tomoyuki Nakamura
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Patent number: 8374497Abstract: In an autofocusing zoom lens, a depth of focus ? is obtained based on an aperture value Fno of a variable diaphragm and a diameter of a permissible circle of confusion ?. A focal position variation amount ?sk for a predetermined positional displacement amount ?Fp0 of a focusing lens unit is obtained according to a position Fp of the focusing lens unit and a variable magnification state Zp. If a predetermined variation amount ?Fp of the focusing lens unit satisfies a first condition, the focusing lens unit is not driven. If the first condition is not satisfied and a second condition is satisfied, the focusing lens unit is driven based on a second autofocusing unit, and if the second condition is not satisfied, the focusing lens unit is driven based on a first autofocusing unit.Type: GrantFiled: June 28, 2012Date of Patent: February 12, 2013Assignee: Canon Kabushiki KaishaInventor: Tomoyuki Nakamura
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Patent number: 8358495Abstract: It is harder to realize structural defects when the thickness of an internal electrode is reduced in a laminated ceramic electronic component, such as a laminated ceramic capacitor, when the internal electrodes contain a base metal as their conductive constituent, and the dielectric ceramic layers are formed from a dielectric barium titanate ceramic, and as an accessory constituent, at least one alkali metal element selected from Li, K, and Na, each of the internal electrodes has a thickness of 0.5 ?m or less, and the content of the alkali metal element in the dielectric ceramic is 0.2 parts by mol or more with respect to 100 parts by mol of the main constituent.Type: GrantFiled: September 1, 2010Date of Patent: January 22, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Akihiro Shiota, Tomoyuki Nakamura, Tomonori Muraki, Makoto Matsuda, Masayuki Ishihara
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Patent number: 8320755Abstract: In an autofocusing zoom lens, a depth of focus ? is obtained based on an aperture value Fno of a variable diaphragm and a diameter of a permissible circle of confusion ?. A focal position variation amount ?sk for a predetermined positional displacement amount ?Fp0 of a focusing lens unit is obtained according to a position Fp of the focusing lens unit and a variable magnification state Zp. If a predetermined variation amount ?Fp of the focusing lens unit satisfies a first condition, the focusing lens unit is not driven. If the first condition is not satisfied and a second condition is satisfied, the focusing lens unit is driven based on a second autofocusing unit, and if the second condition is not satisfied, the focusing lens unit is driven based on a first autofocusing unit.Type: GrantFiled: March 30, 2011Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventor: Tomoyuki Nakamura
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Publication number: 20120269500Abstract: In an autofocusing zoom lens, a depth of focus ? is obtained based on an aperture value Fno of a variable diaphragm and a diameter of a permissible circle of confusion ?. A focal position variation amount ?sk for a predetermined positional displacement amount ?Fp0 of a focusing lens unit is obtained according to a position Fp of the focusing lens unit and a variable magnification state Zp. If a predetermined variation amount ?Fp of the focusing lens unit satisfies a first condition, the focusing lens unit is not driven. If the first condition is not satisfied and a second condition is satisfied, the focusing lens unit is driven based on a second autofocusing unit, and if the second condition is not satisfied, the focusing lens unit is driven based on a first autofocusing unit.Type: ApplicationFiled: June 28, 2012Publication date: October 25, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Tomoyuki Nakamura
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Publication number: 20120262801Abstract: A zoom lens includes, in order from an object side: a first lens unit having a positive refractive power which does not move for varying magnification; a second lens unit having a negative refractive power which moves for varying magnification; a third lens unit having a positive refractive power which moves for varying magnification; and a fourth lens unit having a positive refractive power which does not move for varying magnification, in which: the first lens unit includes a first sub lens unit which does not move for focusing and a second sub lens unit having a positive refractive power which moves for focusing; the first sub lens unit includes three lenses having negative, positive, and positive refractive powers; and each of the elements is appropriately set.Type: ApplicationFiled: April 4, 2012Publication date: October 18, 2012Applicant: CANON KABUSHIKI KAISHAInventor: Tomoyuki NAKAMURA
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Publication number: 20120262608Abstract: A zoom lens includes a first lens unit having a positive refractive power which does not move for zooming; a second lens unit having a negative refractive power which moves during zooming; a third lens unit having a negative refractive power which moves during zooming; a fourth lens unit having a positive refractive power which moves during zooming; and a fifth lens unit having a positive refractive power which does not move for zooming. Air intervals (L2w and L2t) between the second lens unit and the third lens unit at a wide-angle end and at a telephoto end, respectively, an air interval (L3w) between the third lens unit and the fourth lens unit at the wide-angle end, a focal length (f1) of the first lens unit, and a combined focal length (f23w) of the second lens unit and the third lens unit at the wide-angle end are appropriately set.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tomoyuki NAKAMURA, Shoichi TAKEMOTO
