Patents by Inventor Kenji Yamazaki
Kenji Yamazaki 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: 6940939Abstract: A photocatalytic substance having the properties of an n-type semiconductor is deposited on a surface of a metal base made of a stainless steel or Inconel. When necessary, the hydrogen concentration of the reactor water is increased. A current produced by the photocatalytic substance when the same is irradiated with light or radioactive rays in a nuclear reactor flows through the metal base to reduce corrosion current. When necessary, the photocatalytic substance is provided on its surface with at least one of Pt, Rh, Ru and Pd.Type: GrantFiled: June 22, 2000Date of Patent: September 6, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Nagayoshi Ichikawa, Yukio Hemmi, Tetsuo Oosato, Junichi Takagi, Kenji Yamazaki
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Patent number: 6908280Abstract: The blood pump of the present invention comprises: a first casing (1), its rim forming an opening; a second casing (2) having an inlet opening at the top and an outlet opening at an arbitrary position; a pump base part (5) attached to the first and second casings to partition them, its one side facing and covering the rim of the first casing, and the other side facing the base rim of the second casing; a drive part (7) housed inside the first casing driving a rotation shaft with a boss on the tip going roughly through the middle of the pump base part; a plurality of impellers (11) extending in radial direction from the outer periphery of the boss; and a pump part (3) constituted by the concurrence of the plurality of impellers and the second casing, wherein the impellers' boss attachment parts are shifted forward towards the inlet opening. wherein one part is cut out in each of the plurality of impellers' surfaces to form a window opening part (13).Type: GrantFiled: July 15, 2002Date of Patent: June 21, 2005Assignee: Sun Medical Technology Research CorporationInventor: Kenji Yamazaki
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Publication number: 20050117690Abstract: A method for controlling water quality in a nuclear reactor comprises a first and second steps. The first step is to make an amount of iron, which is carried into the nuclear reactor and corrosively eluted from structural material within the nuclear reactor into reactor water, at least twice as much as any one of an amount of nickel, which is carried into the nuclear reactor, and an amount of nickel, which is generated in the nuclear reactor. The second step is to limit an upper limit of concentration value of iron in system water supplied into the nuclear reactor to up to 0.10 ppb.Type: ApplicationFiled: November 18, 2004Publication date: June 2, 2005Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yukio Hemmi, Kenji Yamazaki, Hajime Hirasawa
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Patent number: 6871688Abstract: Fluid pressure of a first fluid chamber of a driving means, which acts as a back pressure, is monitored by a monitoring means when a core pin is driven by the driving means in an inserting direction before injection of a molten material into a cavity of a die arrangement. When the monitored fluid pressure of the first fluid chamber exhibits abnormal behavior that is different from normal behavior observed during a normal period, the monitoring means controls the driving means to stop the driving of the core pin in the inserting direction.Type: GrantFiled: September 4, 2003Date of Patent: March 29, 2005Assignee: Denso CorporationInventors: Kenji Yamazaki, Masanari Terui, Koji Nishikawa
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Publication number: 20050059935Abstract: A skin-penetrating medical object holder can effectively suppress detachment of a medical skin-penetrating object and living body tissue due to external forces, and therefore can prevent infections from occurring from the outset. The skin-penetrating medical object holder includes a belt-like holder main body that is wound around a living body and a penetrating object holding part that is disposed on the holder main body and holds a medical skin-penetrating object that passes through the skin of the living body. The penetrating object holding part is constructed so as to guide, in a state where the holder main body has been wound around the living body, the medical skin-penetrating object along a length direction of the holder main body.Type: ApplicationFiled: September 8, 2004Publication date: March 17, 2005Inventors: Kenji Yamazaki, Kaori Oguchi, Hiroyuki Ushiyama
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Patent number: 6856665Abstract: A method for controlling water quality in a nuclear reactor comprises a first and second steps. The first step is to make an amount of iron, which is carried into the nuclear reactor and corrosively eluted from structural material within the nuclear reactor into reactor water, at least twice as much as any one of an amount of nickel, which is carried into the nuclear reactor, and an amount of nickel, which is generated in the nuclear reactor. The second step is to limit an upper limit of concentration value of iron in system water supplied into the nuclear reactor to up to 0.10 ppb.Type: GrantFiled: September 28, 2001Date of Patent: February 15, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Yukio Hemmi, Kenji Yamazaki, Hajime Hirasawa
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Publication number: 20040250434Abstract: At least one assembly of a movable member or a guide member (32) that guides the movement of the movable member out of a plurality of assemblies of a measuring instrument contains a sealed space (322). A filler is filled in the sealed space (322). According to this arrangement, rigidity of the movable member or the guide member (32) can be enhanced. Further, residual vibration generated along with the movement of the movable body can efficiently be attenuated.Type: ApplicationFiled: June 9, 2004Publication date: December 16, 2004Applicant: MITUTOYO CORPORATIONInventors: Katsuyuki Ogura, Kenji Yamazaki
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Publication number: 20040235932Abstract: A pharmaceutical composition excellent for treatment or prevention of a glaucoma or an ocular hypertension, which inhibits the development of drug resistance, and which can be administered for a longer period of time is provided.Type: ApplicationFiled: June 10, 2004Publication date: November 25, 2004Inventors: Kenji Yamazaki, Ichiro Hirotsu, Hiroshi Miyata, Makio Kitazawa
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Patent number: 6791049Abstract: An electric part with a click feeling comprises a click member, which includes sliding plate portions composed of a metal plate and a supporting plate portion for supporting the sliding plate portions. Each of the sliding plate portions has a sliding portion, on which a front end portion of an engaging and disengaging member slides, and a pair of bending portions which are provided at both ends of the sliding portion and are positioned on the sliding locus of the engaging and disengaging member. The bending portions of neighboring sliding plate portions of the plurality of sliding plate portions are opposite to each other at predetermined intervals and are held in one surface of the supporting plate portion, and the engaging and disengaging member fits into concave portions formed between the bending portions. Thus, since the engaging and disengaging member can move smoothly without getting caught in the bending portions, thereby lengthening it's life span.Type: GrantFiled: December 15, 2003Date of Patent: September 14, 2004Assignee: Alps Electric Co., Ltd.Inventor: Kenji Yamazaki
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Publication number: 20040172113Abstract: A tube unit of the present invention is a tube unit used for connecting internal equipment and external equipment, and includes an inner tube which lets liquid flow between the internal equipment and the external equipment, a cable including an electric wire connected to the internal equipment, and an outer tube which accommodates the inner tube and the cable. For the tube unit of the present invention, the expression “internal equipment” refers to a part of equipment, such as an artificial internal organ that can take the place of an internal organ of a living body or an artificial assist device that can assist the functioning of a living body, that is implanted in a living body, or equipment that is implanted in a living body by medical treatment. The expression “external equipment” can refer to equipment, out of equipment that is used as artificial internal organs, a ventricular assist device, or devices used in medical treatment, that is placed outside of a living body.Type: ApplicationFiled: November 26, 2001Publication date: September 2, 2004Inventors: Kenji Yamazaki, Toshio Mori, Ikuo Wakabayashi
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Patent number: 6769871Abstract: The blood pump according to the present invention comprises a casing having a blood inlet and a blood outlet, and an impeller for circulating blood by rotating inside the casing, wherein both the casing's and the impeller's surfaces in contact with blood are formed of a biocompatible metal, and onto the surfaces in contact with blood a coating film of a hemocompatible material comprising a phospholipid polymer is formed. According to the present invention, the blood pump effectively suppresses the development of thrombi without activating blood coagulation factors such as thrombocites (blood platelets) in the blood, thanks to a coating film of a hemocompatible material made of a phospholipid polymer being formed onto the surfaces in contact with blood of the casing and the impeller composing the main part of the blood pump.Type: GrantFiled: August 12, 2002Date of Patent: August 3, 2004Assignee: Sun Medical Technology Research CorporationInventor: Kenji Yamazaki
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Publication number: 20040129541Abstract: An electric part with a click feeling comprises a click member, which includes sliding plate portions composed of a metal plate and a supporting plate portion for supporting the sliding plate portions. Each of the sliding plate portions has a sliding portion, on which a front end portion of an engaging and disengaging member slides, and a pair of bending portions which are provided at both ends of the sliding portion and are positioned on the sliding locus of the engaging and disengaging member. The bending portions of neighboring sliding plate portions of the plurality of sliding plate portions are opposite to each other at predetermined intervals and are held in one surface of the supporting plate portion, and the engaging and disengaging member fits into concave portions formed between the bending portions. Thus, since the engaging and disengaging member can move smoothly without getting caught in the bending portions, thereby lengthening it's life span.Type: ApplicationFiled: December 15, 2003Publication date: July 8, 2004Applicant: ALPS ELECTRIC CO., LTD.Inventor: Kenji Yamazaki
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Publication number: 20040118775Abstract: The reduced water of the present invention is obtained by dissolving hydrogen gas that has been cooled to between −180 and 60 degrees Celsius and pressurized to between 0.5 and 500 atmosphere pressure into water that has been cooled to between 0 and 50 degrees Celsius, then restoring the temperature and pressure of the water obtained to normal.Type: ApplicationFiled: September 4, 2003Publication date: June 24, 2004Inventors: Wataru Murota, Kenji Yamazaki
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Publication number: 20040061250Abstract: Fluid pressure of a first fluid chamber of a driving means, which acts as a back pressure, is monitored by a monitoring means when a core pin is driven by the driving means in an inserting direction before injection of a molten material into a cavity of a die arrangement. When the monitored fluid pressure of the first fluid chamber exhibits abnormal behavior that is different from normal behavior observed during a normal period, the monitoring means controls the driving means to stop the driving of the core pin in the inserting direction.Type: ApplicationFiled: September 4, 2003Publication date: April 1, 2004Inventors: Kenji Yamazaki, Masanari Terui, Koji Nishikawa
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Publication number: 20040059215Abstract: A diagnostic support apparatus includes a diagnostic support content storage section which stores a plurality of diagnostic support contents for providing diagnostic support, a selecting section which selects desired diagnostic support content from the plurality of diagnostic support contents stored in the diagnostic support content storage section, an information acquiring section which acquires diagnostic information concerning at least one of a patient, an examination, and an image from a medical system, a diagnostic support information creating section which creates diagnostic support information on the basis of the diagnostic support content selected by the selecting section and the diagnostic information acquired from the medical system, and a diagnostic support information display section which displays the created diagnostic support information.Type: ApplicationFiled: September 22, 2003Publication date: March 25, 2004Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Hirokazu Nishimura, Hideki Tanaka, Kenji Yamazaki
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Patent number: 6659600Abstract: The present invention provides an inkjet recording head cartridge and an inkjet recording apparatus that have a simple structure and high reliability. Since individual flow passages in which ink emission orifices are formed are communicated directly with a rectangular ink supply chamber, it is prevented that a bubble of such a size as to cause printing defects rises through an ink supply chamber and blocks the individual flow passages. Also, since ink heated within the ink supply chamber is moved upward to the ink tank chamber by convection and grows an air lump sealed beforehand, it is prevented that a bubble will grow in the ink supply chamber. Furthermore, by allocating a large cross-sectional area to the ink supply chamber, it is prevented that meniscus oscillation of the ink emission orifices is amplified by pressure oscillation caused by ink emission and causes a printing defect. Therefore, reliable printing can be performed with a simple construction.Type: GrantFiled: May 23, 2001Date of Patent: December 9, 2003Assignee: Fuji Xerox Co., Ltd.Inventors: Kazuyuki Oda, Koji Ikegami, Tomoki Umezawa, Ichiro Tomikawa, Masaki Kataoka, Kenji Yamazaki, Norikuni Funatsu, Yoshihisa Ueda, Kohzo Hara, Takayuki Takeuchi, Kunihito Satou, Toshinobu Hamazaki, Koichi Saitoh
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Publication number: 20030180180Abstract: In a method of reducing corrosion of a metal material, a substance such as semiconductor for generating an electric current by thermal excitation is coated or adhered on a metal material surface, to be exposed to a water having a high temperature of 150° C. or more, of a boiler and ducts or pipes, to which hot water heated by the boiler contacts, of a thermal electric power plant or a nuclear reactor structural material or ducts or pipes surrounding the reactor in a nuclear power plant.Type: ApplicationFiled: February 5, 2003Publication date: September 25, 2003Applicants: Kabushiki Kaisha Toshiba, The Tokyo Electric Power Co. Inc., Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Masato Okamura, Yukio Henmi, Nagayoshi Ichikawa, Tetsuo Oosato, Seiji Yamamoto, Kazuo Murakami, Kenji Yamazaki, Junichi Takagi, Tadasu Yotsuyanagi, Shunichi Suzuki, Kenro Takamori, Mitsuru Sambongi, Yuichi Fukaya, Takasi Hirano
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Publication number: 20030176835Abstract: A protector effectively suppresses infections. The protector protects a tube entry part, where a tube passes through the skin of a living body, from infections, and includes a sticking part that is stuck onto the skin of the living body in a periphery of the tube entry part, and a covering that covers the tube entry part, forms an internal space that surrounds the tube entry part, and has a passage through which the tube passes. The covering is provided with an opening that can be freely opened and closed with a cap or the like.Type: ApplicationFiled: March 12, 2003Publication date: September 18, 2003Applicant: SUN MEDICAL TECHNOLOGY RESEARCH CORPORATIONInventors: Kenji Yamazaki, Nobuaki Aizawa
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Patent number: 6552980Abstract: An object of the invention is to provide a method of setting power for a reproducing beam applied to a rotating magneto-optical disc to reproduce data signals therefrom in the magnetically induced super resolution (MSR) mode, thereby to heat the signal-recording layer of the disc sufficiently even if the disc warps and to attain an adequate MSR effect. Another object of the invention is to provide a method of reproducing data from such a magneto-optical disc. To set power for the reproducing laser beam, calibration is carried out for at least two points on the radius of the magneto-optical disc, and optimal powers for these points are calculated. From the optimal powers, the power for the reproducing beam is calculated by curvilinear approximation and set for a given position on the magneto-optical disc. The margin of power for the reproducing beam can be thereby increased.Type: GrantFiled: June 28, 2001Date of Patent: April 22, 2003Assignee: Sony CorporationInventor: Kenji Yamazaki
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Publication number: 20030068227Abstract: The blood pump according to the present invention comprises a casing having a blood inlet and a blood outlet, and an impeller for circulating blood by rotating inside the casing, wherein both the casing's and the impeller's surfaces in contact with blood are formed of a biocompatible metal, and onto the surfaces in contact with blood a coating film of a hemocompatible material comprising a phospholipid polymer is formed. According to the present invention, the blood pump effectively suppresses the development of thrombi without activating blood coagulation factors such as thrombocites (blood platelets) in the blood, thanks to a coating film of a hemocompatible material made of a phospholipid polymer being formed onto the surfaces in contact with blood of the casing and the impeller composing the main part of the blood pump.Type: ApplicationFiled: August 12, 2002Publication date: April 10, 2003Inventor: Kenji Yamazaki