Patents by Inventor Michio Naka
Michio Naka 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: 8436990Abstract: The present invention relates to a microchip 1 having a translucent member 11, a flow channel 10 or a cell formed at a side of the translucent member 11 where light enters, and an aperture 16 formed at a position corresponding to the flow channel 10 or the cell at a side of a translucent member 10 where light goes out. The aperture 16 has a light go-through surface 17 which causes light flux being emitted from the flow channel 10 or the cell to go through and a light reflective surface 18 that totally reflects the incident light flux. A width size W1 of the light go-through surface 17 is smaller than a width size W2 of the flow channel 10 or the cell.Type: GrantFiled: July 22, 2009Date of Patent: May 7, 2013Assignee: ARKRAY, Inc.Inventors: Daisuke Matsumoto, Yasunori Shiraki, Michio Naka
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Publication number: 20110134420Abstract: The present invention relates to a microchip 1 having a translucent member 11, a flow channel 10 or a cell formed at a side of the translucent member 11 where light enters, and an aperture 16 formed at a position corresponding to the flow channel 10 or the cell at a side of a translucent member 10 where light goes out. The aperture 16 has a light go-through surface 17 which causes light flux being emitted from the flow channel 10 or the cell to go through and a light reflective surface 18 that totally reflects the incident light flux. A width size W1 of the light go-through surface 17 is smaller than a width size W2 of the flow channel 10 or the cell.Type: ApplicationFiled: July 22, 2009Publication date: June 9, 2011Inventors: Daisuke Matsumoto, Yasunori Shiraki, Michio Naka
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Patent number: 6991762Abstract: A suction generating device for a sample analysis device is provided. The device comprises four parts, namely, a cover plate 61, a middle plate 62, a bottom plate 63 and an operation plate 64. A protruding portion 642 for compressing the suction generating chamber is formed in an approximately center portion on the lower side of the operation plate 64, a protruding portion 641 for operation is formed in an approximately center portion on the upper side of the operation plate 64. A cavity 631 for inserting the sample analysis device therein is formed in an approximately center portion in the bottom plate 63; and a hole 632 for light irradiation is punched in a determined portion in the cavity 631. A concave portion 623 for fitting the operation plate 64 therein is formed in the middle plate 62, and a window section 621 is formed in the center of the concave portion 623 to let the lower protruding portion 642 on the operation plate 64 protrude therethrough.Type: GrantFiled: September 5, 2000Date of Patent: January 31, 2006Assignee: Arkray, Inc.Inventors: Michio Naka, Kouji Hirayama, Yoshihiko Higuchi, Masufumi Koike, Hisashi Okuda
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Publication number: 20060018790Abstract: This invention provides a device for analyzing a sample which is capable of performing rapid and precise analysis of a small amount of sample, and whose gradient in a measuring apparatus is not limited. This device comprises approximately a rectangular plate shaped body comprising a base member made of resin and a transparent covering. A first depressed cylindrical concave portion is formed in the upper surface of the base member, and a groove is formed in communication with the first depressed cylindrical concave portion, the groove extending to the end of the protrusion portion 5c, and a second depressed cylindrical concave portion which is smaller than the first depressed cylindrical concave portion is formed in a certain position in the groove, the end of the groove opening to the outside at the end of the protrusion portion 5c. Then, the transparent covering is placed over the upper surface of the base member and then integrated together.Type: ApplicationFiled: September 23, 2005Publication date: January 26, 2006Applicant: ARKRAY, Inc.Inventors: Michio Naka, Kouji Hirayama, Yoshihiko Higuchi, Masufumi Koike, Hisashi Okuda
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Publication number: 20020009387Abstract: A test apparatus for assaying a component in a liquid sample by measuring a reflected light comprising a support having a through hole or a light permeable area, a reagent layer having a detecting area fixed on the support to cover said through hole or light permeable area, and a cover which covers at least the detecting area, wherein at least a portion covering the detecting area in the cover is processed into a color which substantially has no influence on the reflected light at a measured wavelength.Type: ApplicationFiled: August 21, 2001Publication date: January 24, 2002Applicant: KYOTO DAIICHI KAGAKU CO., LTD.Inventors: Kouji Hirayama, Michio Naka
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Patent number: 6325975Abstract: A suction generating device for a sample analysis device is provided. The device comprises four parts, namely, a cover plate 61, a middle plate 62, a bottom plate 63 and an operation plate 64. A protruding portion 642 for compressing the suction generating chamber is formed in an approximately center portion on the lower side of the operation plate 64, a protruding portion 641 for operation is formed in an approximately center portion on the upper side of the operation plate 64. A cavity 631 for inserting the sample analysis device therein is formed in an approximately center portion in the bottom plate 63, and a hole 632 for light irradiation is punched in a determined portion in the cavity 631. A concave portion 623 for fitting the operation plate 64 therein is formed in the middle plate 62, and a window section 621 is formed in the center of the concave portion 623 to let the lower protruding portion 642 on the operation plate 64 protrude therethrough.Type: GrantFiled: August 20, 1998Date of Patent: December 4, 2001Assignee: Arkray, Inc.Inventors: Michio Naka, Kouji Hirayama, Yoshihiko Higuchi, Masafumi Koike, Hisashi Okuda
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Patent number: 6299838Abstract: A test apparatus for assaying a component in a liquid sample by measuring a reflected light, comprising a support having a through hole or a light permeable area, a reagent layer having a detecting area fixed on the support to cover said through hole or light permeable area, and a cover which covers at least the detecting area, wherein at least a portion of the cover covering the detecting area is of a color which substantially has no influence on the reflected light at a measured wavelength.Type: GrantFiled: October 4, 1996Date of Patent: October 9, 2001Assignee: Kyoto Daiichi Kagaku Co., Ltd.Inventors: Kouji Hirayama, Michio Naka
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Patent number: 6180062Abstract: This invention provides a device for analyzing a sample which is capable of performing rapid and precise analysis of a small amount of sample, and whose gradient in a measuring apparatus is not limited. This device comprises approximately a rectangular plate shaped body comprising a base member made of resin and a transparent covering. A first depressed cylindrical concave portion is formed in the upper surface of the base member, and a groove is formed in communication with the first depressed cylindrical concave portion, the groove extending to the end of the protrusion portion 5c, and a second depressed cylindrical concave portion which is smaller than the first depressed cylindrical concave portion is formed in a certain position in the groove, the end of the groove opening to the outside at the end of the protrusion portion 5c. Then, the transparent covering is placed over the upper surface of the base member and then integrated together.Type: GrantFiled: February 22, 1999Date of Patent: January 30, 2001Assignee: Kyoto Daiichi Kagaku Co., Ltd.Inventors: Michio Naka, Kouji Hirayama, Yoshihiko Higuchi, Masufumi Koike, Hisashi Okuda
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Patent number: 6126636Abstract: A method of and a device for accurately positioning a measuring means such as a measurement probe relative to that target area of a living body which has a unique marking peculiar to the living body. A transparent sheet member is first applied to the target part, and an image of the unique marking is then transferred onto the transparent sheet member. The transparent sheet member bearing the image of the unique marking is associated with the measuring device so that a subsequent measurement can be performed by the measuring device after the image transferred onto the transparent sheet member has been aligned with the unique marking in the target area.Type: GrantFiled: September 1, 1998Date of Patent: October 3, 2000Assignees: Kurashiki Boseki Kabushiki Kaisha, Kyoto Daiichi Kagaku Co., Ltd.Inventor: Michio Naka
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Patent number: 6001307Abstract: This invention provides a device for analyzing a sample which is capable of performing rapid and precise analysis of a small amount of sample, and whose gradient in a measuring apparatus is not limited. This device comprises approximately a rectangular plate shaped body comprising a base member made of resin and a transparent covering. A first depressed cylindrical concave portion is formed in the upper surface of the base member, and a groove is formed in communication with the first depressed cylindrical concave portion, the groove extending to the end of the protrusion portion 5c, and a second depressed cylindrical concave portion which is smaller than the first depressed cylindrical concave portion is formed in a certain position in the groove, the end of the groove opening to the outside at the end of the protrusion portion 5c. Then, the transparent covering is placed over the upper surface of the base member and then integrated together.Type: GrantFiled: April 22, 1997Date of Patent: December 14, 1999Assignee: Kyoto Daiichi Kagaku Co., Ltd.Inventors: Michio Naka, Kouji Hirayama, Yoshihiko Higuchi, Masufumi Koike, Hisashi Okuda
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Patent number: 5910663Abstract: An optical analyzer includes a light emitting diode (LED). The LED has a body pervious to light and a PN junction semiconductor. The body has a surface portion where a primary light emitted from semiconductor is divided into a first light and a second light. The first light is reflected at a sample and then received by a first detector, while the second light is detected by a second detector. An optical property of the sample is determined by the use of outputs of the first and second detectors.Type: GrantFiled: August 21, 1997Date of Patent: June 8, 1999Assignee: Kyoto Daiichi Kagaku Co., Ltd.Inventor: Michio Naka
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Patent number: 5796482Abstract: The optical measuring apparatus of this invention for measuring a physical amount of a specific component contained in a substance to be measured by the use of measurement light which passes through the substance to be measured and the use of predetermined reference light includes: a first interfering polarizing plate for obtaining a first light interference signal by interfering the measurement light; a second interfering polarizing plate for obtaining a second light interference signal by interfering the reference light; a first photoelectric converting section for converting the first light interference signal into a first electric signal; a second photoelectric converting section for converting the second light interference signal into a second electric signal; a first phase expanding section for expanding a phase of the first electric signal; a second phase expanding section for expanding a phase of the second electric signal; a phase difference measuring section for measuring a phase difference betweenType: GrantFiled: October 30, 1996Date of Patent: August 18, 1998Assignee: Kyoto Daiichi Kagaku Co., Ltd.Inventors: Kexin Xu, Michio Naka, Norihito Suzuki
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Patent number: 5474677Abstract: A number of blood samples collected in sample vessels are allowed to stand by as whole blood or blood cell layer, the sample vessels are sent into sampling part in order, the blood sample suctioned from the sampling nozzle is diluted by mixing with hemolyzing liquid containing labile HbA.sub.1c removing reagent, a part of the mixture is led to a sample-loop of sample injection valve and injected into the column of high pressure liquid chromatograph at a specified time after mixing start, hemoglobin fractions are measured in the state of removal or lowering of labile HbA.sub.1c, and the rate of stable glycohemoglobin is determined from thus obtained chromatogram.Type: GrantFiled: November 15, 1994Date of Patent: December 12, 1995Assignee: Kabushiki Kaisha Kyoto Daiichi KagakuInventor: Michio Naka