Patents by Inventor Kazuhiro Maekawa
Kazuhiro Maekawa 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: 11967903Abstract: A rectifier circuit includes: a first input line to which a first alternating-current voltage is supplied and that is wired along a first direction; a second input line to which a second alternating-current voltage is supplied and that is wired along the first direction on a second direction side of the first input line; a first output line that is configured to output a first rectified voltage and is wired along the second direction; a second output line that is configured to output a second rectified voltage and is wired along the second direction on a first direction side of the first output line; a first rectifier element that is arranged corresponding to an intersection of the first input line and the first output line; a second rectifier element that is arranged corresponding to an intersection of the second input line and the first output line; a third rectifier element that is arranged corresponding to an intersection of the first input line and the second output line; and a fourth rectifier element tType: GrantFiled: February 24, 2022Date of Patent: April 23, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Kinya Matsuda, Kazuhiro Maekawa
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Publication number: 20220271665Abstract: A rectifier circuit includes: a first input line to which a first alternating-current voltage is supplied and that is wired along a first direction; a second input line to which a second alternating-current voltage is supplied and that is wired along the first direction on a second direction side of the first input line; a first output line that is configured to output a first rectified voltage and is wired along the second direction; a second output line that is configured to output a second rectified voltage and is wired along the second direction on a first direction side of the first output line; a first rectifier element that is arranged corresponding to an intersection of the first input line and the first output line; a second rectifier element that is arranged corresponding to an intersection of the second input line and the first output line; a third rectifier element that is arranged corresponding to an intersection of the first input line and the second output line; and a fourth rectifier element tType: ApplicationFiled: February 24, 2022Publication date: August 25, 2022Inventors: Kinya MATSUDA, Kazuhiro MAEKAWA
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Patent number: 10822476Abstract: Provided is a rubber composition for a tread which is improved in a wet grip property and a dry grip property and which allows an improvement in a low temperature brittleness to be compatible with a wet grip property and a dry grip property, characterized in that a polymer having a low glass transition temperature is further used in combination with a solution polymerized styrene butadiene rubber and an emulsion polymerized styrene butadiene rubber each having a specific glass transition temperature and a specific molecular weight distribution.Type: GrantFiled: April 21, 2017Date of Patent: November 3, 2020Assignee: BRIDGESTONE CORPORATIONInventor: Kazuhiro Maekawa
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Publication number: 20190127559Abstract: Provided is a rubber composition for a tread which is improved in a wet grip property and a dry grip property and which allows an improvement in a low temperature brittleness to be compatible with a wet grip property and a dry grip property, characterized in that a polymer having a low glass transition temperature is further used in combination with a solution polymerized styrene butadiene rubber and an emulsion polymerized styrene butadiene rubber each having a specific glass transition temperature and a specific molecular weight distribution.Type: ApplicationFiled: April 21, 2017Publication date: May 2, 2019Applicant: BRIDGESTONE CORPORATIONInventor: Kazuhiro MAEKAWA
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Publication number: 20190118584Abstract: A tire having excellent motion performance on both a dry road surface and a wet road surface. A tire includes a tread having a tread surface on which one or more land portions are defined by two or more circumferential grooves extending in a circumferential direction of the tread, wherein the one or more land portions each have a plurality of sipes extending in a direction traversing an equator of the tire and spaced from each other in the circumferential direction of the tread, and a dynamic elastic modulus E? at 30° C. of a rubber composition forming the one or more land portions, a number N of the plurality of sipes, and a depth D of the circumferential grooves satisfy 0.009?E?/(N×D)?0.029.Type: ApplicationFiled: March 16, 2017Publication date: April 25, 2019Applicant: BRIDGESTONE CORPORATIONInventors: Tatsuya NAKAI, Ietomo MATSUNAGA, Kazuhiro MAEKAWA
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Publication number: 20140299248Abstract: An object is to provide a pneumatic tire having a colored layer that is excellent in preventing contamination of the colored layer as compared to a conventional pneumatic tire having the colored layer formed thereon. According to the present invention, the pneumatic tire having the colored layer formed through the intermediary of a non-contaminating rubber layer on an outer side of a side rubber of a tire side portion in a tire width direction, wherein the non-contaminating rubber layer contains layer compounds 21.Type: ApplicationFiled: November 2, 2012Publication date: October 9, 2014Applicant: BRIDGESTONE CORPORATIONInventors: Kazuhiro Maekawa, Jeeyoung Oh
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Publication number: 20130312890Abstract: Provided are: a rubber laminate having high adhesion between a rubber member including a non-diene rubber and a rubber member including a diene rubber; a run-flat tire obtained by using the rubber laminate, having high adhesion between a side-reinforcing rubber layer and an inner liner, with excellent run-flat durability; and a pneumatic tire including a color layer having high adhesion force to a side rubber while being excellent in stain resistance. The rubber laminate is obtained by laminating a rubber member A including a non-diene rubber and a rubber member B including a diene rubber on each other, the rubber member A and the rubber member B containing a vulcanization accelerator of the same type.Type: ApplicationFiled: February 8, 2012Publication date: November 28, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Masashi Iwata, Norihisa Kano, Kazuhiro Maekawa, Jeeyoung Oh
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Patent number: 8547722Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.Type: GrantFiled: September 23, 2011Date of Patent: October 1, 2013Assignee: Seiko Epson CorporationInventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
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Patent number: 8546808Abstract: The liquid crystal display device of this invention includes picture element regions each defined by a first electrode provided on a first substrate and a second electrode provided on a second substrate so as to oppose the first electrode via a liquid crystal layer sandwiched therebetween. In each of the picture element regions, the first electrode includes a solid portion and a nonsolid portion. The liquid crystal display device further includes a pair of polarizing plates disposed with polarization axes thereof crossing each other substantially perpendicularly. The polarization axis of one of the pair of polarizing plates is substantially parallel to a direction in which the solid portion extends. When a voltage is applied between the first electrode and the second electrode, in each of the picture element regions, liquid crystal molecules of the liquid crystal layer are in a radially-inclined orientation state.Type: GrantFiled: September 22, 2011Date of Patent: October 1, 2013Assignee: Sharp Kabushiki KaishaInventors: Masumi Kubo, Akihiro Yamamoto, Takashi Ochi, Tetsuhiro Yamaguchi, Naoshi Yamada, Katsuhiko Morishita, Kiyoshi Ogishima, Kazuhiro Maekawa
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Patent number: 8547773Abstract: An integrated circuit device includes at least one data driver block for driving data lines, a plurality of control transistors TC1 and TC2, each of the control transistors being provided corresponding to each output line of the data driver block and controlled by using a common control signal, and a pad arrangement region in which data driver pads P1 and P2 for electrically connecting the data lines and the output lines QL1 and QL2 of the data driver block are disposed. The control transistors TC1 and TC2 are disposed in the pad arrangement region.Type: GrantFiled: June 30, 2006Date of Patent: October 1, 2013Assignee: Seiko Epson CorporationInventors: Takayuki Saiki, Satoru Ito, Masahiko Moriguchi, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Kazuhiro Maekawa
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Patent number: 8487032Abstract: Provided is a rubber composition that comprises a rubber component of at least one of natural rubber and synthetic rubber and a resin composition containing a novolak-type resorcin resin and a resol-type phenolic resin in which the content of the dimethylene ether group is within a specific range. Not using hexamethylenetetramine or hexamethoxymethylmelamine as a curing agent, the curability and the thermal stability of the resin composition have been enhanced; and the rubber composition has characteristics of high elasticity, large elongation at breakage and low heat generation. Also provided is a tire which comprises the rubber composition in the tire bead part thereof and, therefore, has improved durability in use thereof while concerning for the environmental safety.Type: GrantFiled: March 30, 2010Date of Patent: July 16, 2013Assignee: Bridgestone CorporationInventors: Kumi Fujiki, Kazuhiro Maekawa
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Patent number: 8310478Abstract: An integrated circuit device includes first and second transistors NTr1 and PTr1 push-pull connected between first and second power supply lines and outputting a voltage of one of the first and second power supply lines to a connection node ND by a charge-pump operation, and a pad PD electrically connected with the connection node ND and electrically connected with a flying capacitor, to which a given voltage is applied at one end, at the other end of the flying capacitor. The pad PD is disposed in an upper layer of at least one of the first and second transistors NTr1 and PTr1 so that the pad PD overlaps part or the entirety of at least one of the first and second transistors NTr1 and PTr1.Type: GrantFiled: June 30, 2006Date of Patent: November 13, 2012Assignee: Seiko Epson CorporationInventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya
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Patent number: 8188544Abstract: An integrated circuit device includes a pad PDx and an electrostatic discharge protection element ESDx formed in a rectangular region and electrically connected with the pad PDx. The pad PDx is disposed in an upper layer of the electrostatic discharge protection element ESDx so that an arrangement direction of the pads is parallel to a long side direction of the region in which the electrostatic discharge protection element ESDx is formed, and the pad PDx overlaps part or the entirety of the electrostatic discharge protection element ESDx.Type: GrantFiled: June 30, 2006Date of Patent: May 29, 2012Assignee: Seiko Epson CorporationInventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru Ito, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya
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Publication number: 20120101211Abstract: Provided is a rubber composition that comprises a rubber component of at least one of natural rubber and synthetic rubber and a resin composition containing a novolak-type resorcin resin and a resol-type phenolic resin in which the content of the dimethylene ether group is within a specific range. Not using hexamethylenetetramine or hexamethoxymethylmelamine as a curing agent, the curability and the thermal stability of the resin composition have been enhanced; and the rubber composition has characteristics of high elasticity, large elongation at breakage and low heat generation. Also provided is a tire which comprises the rubber composition in the tire bead part thereof and, therefore, has improved durability in use thereof while concerning for the environmental safety.Type: ApplicationFiled: March 30, 2010Publication date: April 26, 2012Applicant: Bridgestone CorporationInventors: Kumi Fujiki, Kazuhiro Maekawa
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Publication number: 20120019566Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.Type: ApplicationFiled: September 23, 2011Publication date: January 26, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
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Patent number: 8089437Abstract: A driver circuit which drives a source line of an electro-optical device includes a source line driver section which supplies a grayscale voltage corresponding to grayscale data to the source line, a source output switch section which short-circuits the source line and a common line connected with a capacitor before the source line driver section drives the source line, and a charge recycle control section which controls the source output switch section. The charge recycle control section determines whether or not to short-circuit the source line and the common line in source line units based on the grayscale data and polarity of a common electrode voltage supplied to a common electrode opposite to a pixel electrode of the electro-optical device. The source output switch section short-circuits the source line and the common line based on the determination result of the charge recycle control section.Type: GrantFiled: September 13, 2007Date of Patent: January 3, 2012Assignee: Seiko Epson CorporationInventor: Kazuhiro Maekawa
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Patent number: 8054710Abstract: An integrated circuit device includes first to Nth circuit blocks CB1 to CBN, a first interface region disposed along a fourth side and on the D2 side of the first to Nth circuit blocks CB1 to CBN, and a second interface region disposed along a second side and on the D4 side of the first to Nth circuit blocks CB1 to CBN. A local line LLG formed using a wiring layer lower than an Ith layer is provided between the adjacent circuit blocks as at least one of a signal line and a power supply line. Global lines GLG and GLD formed using the Ith or higher wiring layer are provided along the direction D1 over the circuit block disposed between the nonadjacent circuit blocks as at least one of a signal line and a power supply line.Type: GrantFiled: June 30, 2006Date of Patent: November 8, 2011Assignee: Seiko Epson CorporationInventors: Satoru Ito, Masahiko Moriguchi, Kazuhiro Maekawa, Noboru Itomi, Satoru Kodaira, Junichi Karasawa, Takashi Kumagai, Hisanobu Ishiyama, Takashi Fujise
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Patent number: 8053775Abstract: The liquid crystal display device of this invention includes a plurality of picture element regions each defined by a first electrode provided on a face of a first substrate facing a liquid crystal layer and a second electrode provided on a second substrate so as to oppose the first electrode via the liquid crystal layer sandwiched therebetween. In each of the picture element regions, the first electrode has a plurality of openings and a solid portion, the liquid crystal layer is in a vertical orientation state when no voltage is applied between the first electrode and the second electrode, and when a voltage is applied between the first electrode and the second electrode, a plurality of liquid crystal domains each in a radially-inclined orientation state are respectively formed in the plurality of openings and the solid portion by inclined electrode fields generated at respective edge portions of the openings of the first electrode.Type: GrantFiled: January 19, 2010Date of Patent: November 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Masumi Kubo, Akihiro Yamamoto, Takashi Ochi, Tetsuhiro Yamaguchi, Naoshi Yamada, Katsuhiko Morishita, Kiyoshi Ogishima, Kazuhiro Maekawa
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Patent number: 7956833Abstract: A display driver includes a common electrode charge storage switch provided between a first capacitor element connection node to which one end of a first capacitor element can be connected and a common electrode voltage output node to which a voltage of a common electrode opposite to a pixel electrode of an electro-optical device through an electro-optical material is supplied, a source charge storage switch provided between a second capacitor element connection node to which one end of a second capacitor element can be connected and a source voltage output node to which a voltage of a source line of the electro-optical device is supplied, and a node short circuit switch provided between the common electrode voltage output node and the source voltage output node.Type: GrantFiled: June 13, 2007Date of Patent: June 7, 2011Assignee: Seiko Epson CorporationInventors: Satoru Ito, Hisanobu Ishiyama, Motoaki Nishimura, Kazuhiro Maekawa, Haruo Kamijo, Hironori Kobayashi, Isamu Moriya
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Publication number: 20110128274Abstract: An integrated circuit device includes first and second transistors NTr1 and PTr1 push-pull connected between first and second power supply lines and outputting a voltage of one of the first and second power supply lines to a connection node ND by a charge-pump operation, and a pad PD electrically connected with the connection node ND and electrically connected with a flying capacitor, to which a given voltage is applied at one end, at the other end of the flying capacitor. The pad PD is disposed in an upper layer of at least one of the first and second transistors NTr1 and PTr1 so that the pad PD overlaps part or the entirety of at least one of the first and second transistors NTr1 and PTr1.Type: ApplicationFiled: February 8, 2011Publication date: June 2, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Takashi Kumagai, Hisanobu Ishiyama, Kazuhiro Maekawa, Satoru ITO, Takashi Fujise, Junichi Karasawa, Satoru Kodaira, Takayuki Saiki, Hiroyuki Takamiya