Patents Assigned to Yokogawa Electric Corp.
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Publication number: 20090186403Abstract: The present invention provides a biochip cartridge wherein an elastic body is used for a substrate member in order to stabilize the feeding of blood or solution and whereby it is possible to avoid the risk of accidental contact of the operator with solutions due to mishandling. The biochip cartridge comprises a tabular substrate member formed using an elastic material and a flexible cover airtightly attached to the surface of the substrate member, wherein at least an area for storing biopolymers, an area for detecting desired biopolymers from the biopolymers that have been preprocessed, and a flow path for connecting the areas is formed on the substrate member, so that biopolymers can be successively moved from the biopolymer storage area to the biopolymer detection area through the flow path.Type: ApplicationFiled: August 5, 2008Publication date: July 23, 2009Applicant: YOKOGAWA ELECTRIC CORP.Inventors: Takeo Tanaami, Kazuhisa Fukushima
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Patent number: 7035490Abstract: When a voltage is applied to plural spot electrodes selected from the spot electrodes arranged in the matrix form and the light incident on the two-dimensional plane waveguide is reflected by at least two parallel lines, the refractive index of the optical waveguide is partly changed so that the wavelength of the light, the angle of the two lines to the incident light and the distance between the lines satisfy the Bragg reflection condition.Type: GrantFiled: April 19, 2004Date of Patent: April 25, 2006Assignee: Yokogawa Electric Corp.Inventors: Shun-ichi Miyazaki, Akira Miura, Shinji Kobayashi, Morio Wada, Tsuyoshi Yakihara, Sadaharu Oka, Shinji Iio, Tadashige Fujita, Chie Sato
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Patent number: 7002737Abstract: This invention realizes a three-dimensional confocal microscope in which mechanical vibrations do not occur in the scanning unit for scanning in the direction of optical axis, and in which scanning in the direction of optical axis can be carried out at a high speed. This invention has the following features. In the confocal microscope having a confocal scanner attached to an optical microscope and constructed to enable acquisition of an image of a sample as a confocal image by the confocal scanner, a variable-focus lens of surface tension control type having no moving part is uses as the field lens.Type: GrantFiled: August 31, 2004Date of Patent: February 21, 2006Assignee: Yokogawa Electric Corp.Inventors: Takashi Akiyama, Takayuki Kei, Kenta Mikuriya
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Patent number: 6891986Abstract: In an optical switch, a carrier-accumulating layer in which injected carriers are accumulated is provided on a semiconductor substrate having a waveguide formed thereon so that injected effective carriers tend to be accumulated in an effective part, and the burden on a driving circuit is thus reduced to realize high-speed operation. At the same time, when a clad on the carrier injection side, of clad layers formed on both sides of the waveguide, is a second clad layer, and a clad on the substrate side is a first clad layer, a third clad layer is formed on the first clad layer to reduce propagation loss in the waveguide.Type: GrantFiled: January 26, 2004Date of Patent: May 10, 2005Assignee: Yokogawa Electric Corp.Inventors: Shinji Iio, Masayuki Suehiro, Shin-ichi Nakajima, Yoshiyuki Asano, Akira Miura, Tsuyoshi Yakihara, Shinji Kobayashi, Sadaharu Oka, Morio Wada, Shoujirou Araki, Machio Dobashi, Chie Sato, Yasukazu Akasaka
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Patent number: 6088244Abstract: A switching power supply comprising a main converter that turns ON and OFF a DC current applied to a primary winding of a main transformer by a main switching element and outputs a main output voltage to a secondary circuit by rectifying and smoothing current induced in a secondary winding; an error amplifier generating an error voltage between the main output voltage and a first reference voltage; an over-voltage protection circuit that generates an over-voltage protection signal when the main output voltage exceeds a second reference voltage; a PWM circuit to control a drive signal for the main switching element to minimize error voltage outputted by the error amplifier; and a shut-down execution circuit that stops the main converter operation when the over-voltage protection signal is generated; wherein are provided a device to superimpose the over-voltage protection signal on the error signal of the main output voltage induced in the secondary winding and to transmit the superimposed signal to the primaryType: GrantFiled: November 10, 1999Date of Patent: July 11, 2000Assignee: Yokogawa Electric Corp.Inventors: Masaki Shioya, Hideaki Matsumura, Takumi Oe, Iwao Nakanishi
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Patent number: 5134578Abstract: A bit-serial processor for selectively carrying out the sequential steps of performing by successive approximations Coordinate Rotation Digital Computation (CORDIC), non-restoring division or non-restoring square rooting calculations is suitable for inclusion in a monolithic integrated circuit with a plurality of sensors for generating respective sensor output signals, circuitry for converting each sensor output signal to bit-serial digital format, and a bit-serial muliptly-add processor. Together with an electrically-erasable programmable read-only memory and a plurality of current transformers, the monolithic integrated circuit implements a system for metering a-c power main conductors.Type: GrantFiled: April 15, 1991Date of Patent: July 28, 1992Assignees: General Electric Company, Yokogawa Electric Corp.Inventors: Steven L. Garverick, Kenji Fujino
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Patent number: 4863590Abstract: A body fluid treating circuit comprising a block for collecting a body fluid from a human body, a body fluid treating block and a block for returning the treated body fluid to the human body, said body fluid treating block comprising a plurality of treating units for treating the body fluid by passing therethrough, the units being arranged in parallel flow relationship, body fluid feed and return lines connected to each of the treating units so as to selectively feed to and return from the units through line switching means, regenerating liquid feed lines connected to each of the units so as to selectively feed the regenerating liquid to the units through line switching means, washing liquid feed lines connected to each of the units so as to selectively feed the washing liquid to the units, discharge lines for discharging the regenerating liquid or washing liquid connected to each of the units so as to selectively discharge from the units through line switching means, and a means for measuring the salt concenType: GrantFiled: September 29, 1987Date of Patent: September 5, 1989Assignees: Yokogawa Electric Corp., Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Michikazu Ohnishi, Hiroshi Ohgoshi, Satoshi Takada