Patents by Inventor Yasuaki Komiyama
Yasuaki Komiyama 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: 7403809Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: GrantFiled: March 29, 2004Date of Patent: July 22, 2008Assignee: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Publication number: 20040193037Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: ApplicationFiled: March 29, 2004Publication date: September 30, 2004Applicant: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Patent number: 6735460Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: GrantFiled: July 5, 2002Date of Patent: May 11, 2004Assignee: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Patent number: 6539245Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: GrantFiled: February 27, 2001Date of Patent: March 25, 2003Assignee: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Publication number: 20020173714Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: ApplicationFiled: July 5, 2002Publication date: November 21, 2002Applicant: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Patent number: 6269262Abstract: A biomagnetic field measurement apparatus includes a bed which holds a subject to be inspected in a shielded room. A cryostat holds a plurality of SQUID magnetometers at low temperature. The cryostat is arranged in the shielded room and the plurality of SQUID magnetometers detect a magnetic field generated from the subject. A driving and detecting circuit drives the plurality of SQUID magnetometers and detects signals therefrom that are processed by a computer. A display that is arranged in the shielded room displays data for viewing by an operator.Type: GrantFiled: June 15, 1998Date of Patent: July 31, 2001Assignee: Hitachi, Ltd.Inventors: Akihiko Kandori, Keiji Tsukada, Ryuichi Shinomura, Hiroyuki Suzuki, Hitoshi Sasabuchi, Shoji Kondo, Yasuaki Komiyama, Kenji Teshigawara
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Publication number: 20010009975Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is vertical to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential value of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: ApplicationFiled: February 27, 2001Publication date: July 26, 2001Applicant: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Patent number: 6230037Abstract: A biomagnetic field measuring apparatus has a plurality of fluxmeters disposed externally of a living body and each including a superconducting quantum interference device (SQUID) for detecting a biomagnetic field generated from the living body, the plurality of fluxmeters being operative to detect a temporal change of a component of the biomagnetic field in a first direction which is normal to the surface of the living body, an operation processor for performing computation for determining a temporal change of a value proportional to a root of square sum of differential values of the first-direction magnetic field component in second and third directions which cross the first direction and computation for integrating the temporal change of the value over a predetermined interval to determine an integral value, and a display for displaying the determined integral value. Distribution of magnetic fields generated from the heart is determined with a small number of fluxmeters.Type: GrantFiled: March 6, 1998Date of Patent: May 8, 2001Assignee: Hitachi, Ltd.Inventors: Keiji Tsukada, Akihiko Kandori, Kenichi Okajima, Hitoshi Sasabuchi, Hiroyuki Suzuki, Shoji Kondo, Yasuaki Komiyama
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Patent number: 5639425Abstract: An analyzing apparatus has a transfer device having a movable gripper, a pipetting device having a movable nozzle and a measuring unit. One of a plurality of tips arranged on a tip rack and one of a plurality of vessels arranged on a vessel rack are held by the gripper to be set in a tip holder. A nozzle pushes the tip on the tip holder to connect to the tip. A sample and reagents are delivered into a vessel on the tip holder by the tip connected to the nozzle. The used tip is detached from the nozzle. The vessel containing a reaction mixture is transferred to a sucking position with the gripper after incubation, and the reaction mixture is introduced into the measuring unit. The used vessel is transferred to a waste box with the gripper.Type: GrantFiled: September 18, 1995Date of Patent: June 17, 1997Assignee: Hitachi, Ltd.Inventors: Yasuaki Komiyama, Ryuji Tao, Hiroyasu Uchida