Patents by Inventor Keiji Ito
Keiji Ito 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).
-
Patent number: 7609202Abstract: A measuring system wherein radio waves from a GPS satellite (4) are received by a reference station (1) and a plurality of mobile stations (3) to perform relative measuring among particular stations, thereby measuring the shift amounts of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative measuring relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative measuring. Each of the stations (1, 3) is equipped with a GPS receiver (11, 21) that receives the radio waves from the GPS satellite (4), and further equipped with a wireless communication apparatus (12, 22) that transmits/receives data to/from a particular station.Type: GrantFiled: October 29, 2004Date of Patent: October 27, 2009Assignee: Hitachi Zosen CorporationInventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
-
Publication number: 20090239745Abstract: To improve a CO conversion in stoichiometry-lean atmosphere, and additionally to prevent the rise of pressure loss. A catalytic coating layer 2 is constituted of a lower layer 20 including an oxygen storage capacity material and an upper layer being formed on a surface of the lower layer 20 and including a catalytic noble metal, and a thickness of the upper layer is adapted so as to be 5 ?m-40 ?m. The upper layer 21 is good in terms of gas diffusibility, and thereby OSC resulting from the oxygen storage capacity material being included in the lower layer 20 is demonstrated maximally.Type: ApplicationFiled: July 24, 2007Publication date: September 24, 2009Inventors: Masanori Yamato, Takatoshi Shinyoshi, Takumi Suzawa, Keiji Ito
-
Patent number: 7585689Abstract: A method for manufacturing a semiconductor laser device in which a first conductivity type cladding layer, and active layer, a second conductivity type first cladding layer, and a second conductivity type second cladding layer are laminated in this order on a semiconductor substrate by crystal growth, the second conductivity type second cladding layer is processed into a plurality of stripe-shaped ridge structure portions, and a laser bar is formed by cleavage in a direction orthogonal to a longitudinal direction of the ridge structure portions. According to this method, it is possible to provide a method for manufacturing a semiconductor laser device and a method for inspecting a semiconductor laser bar in the manufacturing process, capable of determining for each chip whether or not a deviation of a resonator length is within the tolerance in a simple manner.Type: GrantFiled: August 22, 2008Date of Patent: September 8, 2009Assignee: Panasonic CorporationInventors: Takayuki Kashima, Keiji Ito, Kouji Makita
-
Patent number: 7564884Abstract: A laminated composite includes: a 1st-conductive-type cladding layer laid on a substrate; an active layer laid on the 1st-conductive-type cladding layer; and a ridge-stripe 2nd-conductive-type cladding layer laid on the active layer. A pair of films is disposed at the end faces of the laminated composite so as to oppose each other along the lamination direction. The paired films are formed to have different spectral reflectances from each other. The resonator structure is formed with the laminated composite and the paired films. When, in the length direction of the resonator, a side with one of the paired films which has a smaller spectral reflectance is the forward side and a side with the other film having a larger spectral reflectance is the backward side, the laminated composite is structured so that the optical confinement factor becomes smaller on the forward side than on the backward side.Type: GrantFiled: September 21, 2006Date of Patent: July 21, 2009Assignee: Panasonic CorporationInventors: Keiji Ito, Isao Kidoguchi, Hiroyoshi Yajima
-
Publication number: 20090053838Abstract: A first conductivity type cladding layer, an active layer, a second conductivity type first cladding layer, and a second conductivity type second cladding layer are laminated in this order on a semiconductor substrate by crystal growth. The second conductivity type second cladding layer is processed into a plurality of stripe-shaped ridge structure portions, and a laser bar is formed by cleavage in a direction orthogonal to a longitudinal direction of the ridge structure portions. A plurality of columns of the ridge structure portions that are aligned in the longitudinal direction of the ridge structure portions at predetermined intervals are arranged. The arrangement is such that each of the columns is displaced from the adjacent column in the longitudinal direction of the ridge structure portions so that an end portion of each of the ridge structure portions and an end portion of the adjacent ridge structure portion overlap each other in the longitudinal direction of the ridge structure portions.Type: ApplicationFiled: August 22, 2008Publication date: February 26, 2009Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., Panasonic CorporationInventors: Takayuki KASHIMA, Keiji ITO, Kouji MAKITA
-
Publication number: 20080315231Abstract: A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.Type: ApplicationFiled: June 12, 2008Publication date: December 25, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD.Inventors: Isao Kidoguchi, Yasuo Kitaoka, Hiroyoshi Yajima, Keiji Ito, Akihiko Ishibashi, Yoshiaki Hasegawa, Kiminori Mizuuchi
-
Publication number: 20080284645Abstract: A positioning system wherein radio waves from a GPS satellite (4) are received by a reference station (1), the absolute position of which is already known, and a plurality of mobile stations (3) to perform relative positioning among particular stations, thereby determining the positions of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative positioning relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative positioning. Each of the stations (1, 3) is equipped with a GPS receiver (11, 21) that receives the radio waves from the GPS satellite (4), and further equipped with a wireless communication apparatus (12, 22) that transmits/receives data to/from a particular station.Type: ApplicationFiled: October 29, 2004Publication date: November 20, 2008Applicant: HITACHI ZOSEN CORPORATIONInventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
-
Patent number: 7450061Abstract: A position measurement system for measuring displacement of an observation station viewed from a reference station by receiving radio waves from satellites by these stations, and performing relative position measurement between the stations, having: a short period displacement measurement section for measuring a short period displacement component in each of the stations through independent position measurement; a relative position computing section for performing relative position measurement between said stations; a long period position computing section for inputting a short period displacement component measured by the short period displacement measurement section, a relative position determined by the relative position computing section and an absolute position from the reference station, and determining the absolute position including a long period displacement component by removing the short period displacement component measured by each of the stations; and a radio communication device installed on eaType: GrantFiled: November 10, 2004Date of Patent: November 11, 2008Assignee: Hitachi Zosen CorporationInventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
-
Patent number: 7407421Abstract: A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.Type: GrantFiled: November 19, 2004Date of Patent: August 5, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Isao Kidoguchi, Yasuo Kitaoka, Hiroyoshi Yajima, Keiji Ito, Akihiko Ishibashi, Yoshiaki Hasegawa, Kiminori Mizuuchi
-
Publication number: 20080143592Abstract: A position measurement system for measuring displacement of an observation station viewed from a reference station by receiving radio waves from satellites by these stations, and performing relative position measurement between the stations, having: a short period displacement measurement section for measuring a short period displacement component in each of the stations through independent position measurement; a relative position computing section for performing relative position measurement between said stations; a long period position computing section for inputting a short period displacement component measured by the short period displacement measurement section, a relative position determined by the relative position computing section and an absolute position from the reference station, and determining the absolute position including a long period displacement component by removing the short period displacement component measured by each of the stations; and a radio communication device installed on eaType: ApplicationFiled: November 10, 2004Publication date: June 19, 2008Inventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
-
Patent number: 7301979Abstract: A semiconductor laser device of the present invention includes: a first conductivity type cladding layer; an active layer; and a second conductivity type cladding layer, which are on a substrate. The semiconductor laser device further includes a stripe structure for injecting carriers therein. A width of the stripe is wider at a front end face of a resonator from which laser light is emitted than at a rear end face that is located on an opposite side of the front end face, and a reflectance of the front end face is lower than a reflectance of the rear end face. With this configuration, the injection of carriers into an active layer can be controlled in accordance with an optical intensity distribution along the resonator direction within the semiconductor laser, thus achieving a decrease in threshold current, an enhancement of a slope efficiency and an enhancement of a kink level.Type: GrantFiled: April 14, 2004Date of Patent: November 27, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Keiji Ito, Isao Kidoguchi, Toru Takayama, Osamu Imafuji
-
Publication number: 20070264970Abstract: A measuring system wherein radio waves from a GPS satellite (4) are received by a reference station (1) and a plurality of mobile stations (3) to perform relative measuring among particular stations, thereby measuring the shift amounts of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative measuring relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative measuring. Each of the stations (1, 3) is equipped with a GPS receiver (11, 21) that receives the radio waves from the GPS satellite (4), and further equipped with a wireless communication apparatus (12, 22) that transmits/receives data to/from a particular station.Type: ApplicationFiled: October 29, 2004Publication date: November 15, 2007Inventors: Yukihiro Terada, Keiji Ito, Takenori Abe, Takashi Fujita
-
Publication number: 20070237380Abstract: A three-dimensional medical image display system comprises a pre-processing device that includes data analysis device and a data processing device. The pre-processing device inputs a set of medical image data created by a scan performed by a medical imaging device. The data analysis device determines a set of analytic protocols for processing the image data by analyzing the image data. The data processing device processes the image data according to a protocol and a corresponding set of parameters identified by the data analysis device.Type: ApplicationFiled: October 25, 2006Publication date: October 11, 2007Applicant: Terarecon, Inc.Inventors: Akio Iwase, Keiji Ito, Vikram Simha, Robert James Taylor, Motoaki Saito, Kazuo Takahashi, TieCheng Zhao
-
Patent number: 7028348Abstract: In order to dress a subject's hair using the two first and second kinds of medicine solutions, a hood must be once taken off. Therefore, in order to apply the second medicine solution, the position of the hood must be adjusted so that the head is centrally located at the hood. This adjustment is troublesome for both the operator and subject. In order to obviate such inconvenience, a hair dressing device equipped with a hood D includes a fixed hood 71 and an opening/closing hood 72 into which said hood is divided, said opening/closing hood being openably attached to said fixed hood. In this case, said opening/closing hood 72 is opened/closed so that said fixed hood 71 is opened from above.Type: GrantFiled: March 18, 2003Date of Patent: April 18, 2006Assignee: Takara Belmont CorporationInventors: Tomoaki Tadaka, Keiji Ito, Norimasa Okuzaki, Hajime Mizutani
-
Publication number: 20050116614Abstract: A light source of the present invention includes: a semiconductor light emitting device which has a light emitting face and emits light from part of the light emitting face; a container which has a light transmitting window for transmitting the light and accommodates the semiconductor light emitting device; and a gettering portion for performing gettering of a material containing at least one of carbon and silicon. The gettering portion is positioned, in the container, in a region other than the part of the light emitting face of the semiconductor light emitting device.Type: ApplicationFiled: November 19, 2004Publication date: June 2, 2005Inventors: Isao Kidoguch, Yasuo Kitaoka, Hiroyoshi Yajima, Keiji Ito, Akihiko Ishibashi, Yoshiaki Hasegawa, Kiminori Mizuuchi
-
Patent number: 6826297Abstract: Multiple objects having the same physical property within a subject are displayed as distinct three-dimensional images in one or more views. Projection data obtained by scanning the subject with electromagnetic radiation are used to create a spatial distribution of absorption values for the subject that is displayed as an image on an image display unit. The spatial distribution is also stored as a series of voxels representing a three-dimensional image of the subject. Particular spatial regions within the image are defined as objects, with each object comprising a set of voxels. The objects are grouped into one or more views using a set selection panel on the image display unit. A density, gradient and color for each object in a view are determined based on properties input through the a series of object property setting panels on the image display unit. Each object in a particular view is associated with one of the property setting panels.Type: GrantFiled: May 18, 2001Date of Patent: November 30, 2004Assignee: TeraRecon, Inc.Inventors: Motoaki Saito, Kazuo Takahashi, Keiji Ito, Kimiaki Saito
-
Publication number: 20040233957Abstract: A semiconductor laser device of the present invention includes: a first conductivity type cladding layer; an active layer; and a second conductivity type cladding layer, which are on a substrate. The semiconductor laser device further includes a stripe structure for injecting carriers therein. A width of the stripe is wider at a front end face of a resonator from which laser light is emitted than at a rear end face that is located on an opposite side of the front end face, and a reflectance of the front end face is lower than a reflectance of the rear end face. With this configuration, the injection of carriers into an active layer can be controlled in accordance with an optical intensity distribution along the resonator direction within the semiconductor laser, thus achieving a decrease in threshold current, an enhancement of a slope efficiency and an enhancement of a kink level.Type: ApplicationFiled: April 14, 2004Publication date: November 25, 2004Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Keiji Ito, Isao Kidoguchi, Toru Takayama, Osamu Imafuji
-
Patent number: 6764716Abstract: The present invention provides a ceramic honeycomb structural body, and method for preparing the same, which can satisfactorily support a catalyst and can demonstrate superior mechanical strength, even if far thinner walls are used. Said structural body comprises lattice walls formed by a large number of cells 10 which are channels for fluid and a peripheral wall 12 which covers at least the circumference of said lattice walls 11. The outer peripheral portion 112 of said lattice walls 11 located in the vicinity of said peripheral wall 12 (area B) contain a densified portion of smaller porosity than that of an inner peripheral portion 111, of said lattice walls 11, which is located inside said outer peripheral portion 112 (area A).Type: GrantFiled: July 14, 2003Date of Patent: July 20, 2004Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Keiji Ito, Masanori Yamada, Tomohiko Nakanishi
-
Patent number: 6752969Abstract: There is provided a honeycomb structural body with a high cell density of 600 cells/in2 or greater and excellent catalyst loading properties. In a honeycomb structural body comprising a plurality of cells formed by providing partition walls composed mainly of cordierite, which has the chemical composition SiO2: 45-55 wt %, Al2O3: 33-42%, MgO: 12-18 wt %, in a honeycomb fashion, the density of the cells is at least 600 cells/in2 and the pore volume of the partition walls is at least 30%.Type: GrantFiled: November 22, 1999Date of Patent: June 22, 2004Assignee: Denso CorporationInventors: Mamoru Nishimura, Keiji Ito
-
Publication number: 20040105956Abstract: The present invention provides a ceramic honeycomb structural body, and method for preparing the same, which can satisfactorily support a catalyst and can demonstrate superior mechanical strength, even if far thinner walls are used. Said structural body comprises lattice walls formed by a large number of cells 10 which are channels for a fluid and a peripheral wall 12 which covers at least the circumference of said lattice walls 11.Type: ApplicationFiled: July 14, 2003Publication date: June 3, 2004Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Keiji Ito, Masanori Yamada, Tomohiko Nakanishi