Patents by Inventor Atsushi Okawa
Atsushi Okawa 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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Publication number: 20240020642Abstract: A system and method are provided for using artificial intelligence for patent valuation. The method includes obtaining a master list of patent classification codes used by a patent office. The method also includes, for each patent issued by the patent office: obtaining a respective set of patent classification codes assigned to the respective patent and forming a respective training vector. Each element in the respective training vector is a categorical variable that specifies whether a patent classification code is included in the respective set of classification codes. The system receives a respective user-specified value metric for each patent. The method also includes training a machine learning model according to a training data table that includes the training vectors. The machine learning model is configured to predict value metrics for patents according to their corresponding patent classification codes.Type: ApplicationFiled: September 26, 2023Publication date: January 18, 2024Applicant: OLYMPUS CORPORATIONInventors: Yoshikazu AKAMINE, Ryo KARASAWA, Atsushi OKAWA
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Patent number: 9133854Abstract: A centrifugal blood pump device includes a housing, a centrifugal pump section having an impeller which rotates in the housing to send blood by centrifugal force upon rotation, an impeller rotation torque generation section for attracting a magnetic member of the impeller and rotating the impeller, and a plurality of grooves for hydrodynamic bearing provided on an inner face of the housing on the impeller rotation torque generation section side. A side wall of each of the grooves for hydrodynamic bearing is formed as an inclined side wall inclined obliquely such that the groove for hydrodynamic bearing is expanded from a bottom face of the groove for hydrodynamic bearing toward an opening face of the groove for hydrodynamic bearing.Type: GrantFiled: September 14, 2012Date of Patent: September 15, 2015Assignee: Thoratec CorporationInventors: Atsushi Okawa, Takehisa Mori
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Patent number: 8997349Abstract: A manufacturing method for medical equipment involves electron beam irradiating a titanium or titanium alloy substrate surface that has at least been machined, whereby platelet adhesion of the surface to be contacted by blood is reduced. The manufacturing method for medical equipment can also use a specific pre-processing method and an electron beam irradiation method to reduce the platelet adhesion of the surface which is to be contacted with blood, to suppress the formation of minute depressions (craters) in the surface, which can occur due to the irradiation by an electron beam.Type: GrantFiled: March 15, 2013Date of Patent: April 7, 2015Assignee: Thoratec CorporationInventors: Takehisa Mori, Atsushi Okawa, Takeshi Tsubouchi, Kensuke Uemura
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Patent number: 8747305Abstract: To provide an endoscope system that includes a light source, an insertion part to be inserted into a living organism for guiding a illumination light emitted from the light source and a light returned from the living organism, a deflection optical system for outwardly directing the illumination light in a radius direction of the insertion part and for introducing a light inwardly returned from the living organism in the radius direction into the insertion part, a part for capturing the returned light, a part for detecting an insertion speed of the insertion part, a part for adjusting a frame rate for the image capturing of the image capturing part based on the detected insertion speed, an image forming part for arranging acquired images at a pitch based on the insertion speed to form an image of the inside of the living organism, and a part for displaying the formed image.Type: GrantFiled: May 24, 2007Date of Patent: June 10, 2014Assignee: Olympus CorporationInventor: Atsushi Okawa
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Publication number: 20130243623Abstract: A centrifugal blood pump device includes a housing, a centrifugal pump section having an impeller which rotates in the housing to send blood by centrifugal force upon rotation, an impeller rotation torque generation section for attracting a magnetic member of the impeller and rotating the impeller, and a plurality of grooves for hydrodynamic bearing provided on an inner face of the housing on the impeller rotation torque generation section side.Type: ApplicationFiled: September 14, 2012Publication date: September 19, 2013Applicant: Terumo Kabushiki KaishaInventors: Atsushi OKAWA, Takehisa MORI
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Publication number: 20130230422Abstract: A manufacturing method for medical equipment involves electron beam irradiating a titanium or titanium alloy substrate surface that has at least been machined, whereby platelet adhesion of the surface to be contacted by blood is reduced. The manufacturing method for medical equipment can also use a specific pre-processing method and an electron beam irradiation method to reduce the platelet adhesion of the surface which is to be contacted with blood, to suppress the formation of minute depressions (craters) in the surface, which can occur due to the irradiation by an electron beam.Type: ApplicationFiled: March 15, 2013Publication date: September 5, 2013Applicants: NAGATA SEIKI KABUSHIKI KAISHA, TERUMO KABUSHIKI KAISHAInventors: Takehisa MORI, Atsushi OKAWA, Takeshi Tsubouchi, Kensuke Uemura
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Patent number: 8521261Abstract: A lesion extracting device includes a light source for emitting an excitation light toward a subject body, a control unit for changing an amount of the excitation light, a light irradiating and receiving portion for irradiating the excitation light to the subject body and receiving fluorescence generated from the subject body, a distance holding member for holding a distance between the subject body and the light irradiating and receiving portion at a predetermined value, a measuring unit for measuring the intensity of the fluorescence received by the light irradiating and receiving portion, and an extracting unit for extracting a lesion part of the subject body based on relationships between measured values of changes in the fluorescence intensity with respect to changes in the amount of the excitation light and information regarding the changes in the amount of the excitation light, the information being obtained from the control unit.Type: GrantFiled: January 27, 2012Date of Patent: August 27, 2013Assignee: Olympus CorporationInventors: Atsushi Okawa, Tianyu Xie, Toshiaki Watanabe, Yasushige Ishihara
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Patent number: 8395775Abstract: A fluorescent agent accumulation concentration measuring apparatus is configured to include a single-wavelength LED to radiate excitation light to a test bottle loaded in the inside, a barrier filter to transmit only fluorescence from the test bottle, a photoreceptor to receive the fluorescence through the barrier filter and output an electric signal, a detection processing circuit to conduct signal processing of the electric signal from the photoreceptor and detect the fluorescence intensity, and an operation circuit 26 to compare the detection result from the detection processing circuit with an analytical pattern stored in a pattern storage portion and calculate the peak time of the accumulation concentration in a tissue of a sample in the test bottle.Type: GrantFiled: May 11, 2011Date of Patent: March 12, 2013Assignee: Olympus CorporationInventor: Atsushi Okawa
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Publication number: 20120197134Abstract: A lesion extracting device includes a light source for emitting an excitation light toward a subject body, a control unit for changing an amount of the excitation light, a light irradiating and receiving portion for irradiating the excitation light to the subject body and receiving fluorescence generated from the subject body, a distance holding member for holding a distance between the subject body and the light irradiating and receiving portion at a predetermined value, a measuring unit for measuring the intensity of the fluorescence received by the light irradiating and receiving portion, and an extracting unit for extracting a lesion part of the subject body based on relationships between measured values of changes in the fluorescence intensity with respect to changes in the amount of the excitation light and information regarding the changes in the amount of the excitation light, the information being obtained from the control unit.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicant: OLYMPUS CORPORATIONInventors: Atsushi Okawa, Tianyu Xie, Toshiaki Watanabe, Yasushige Ishihara
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Patent number: 8169470Abstract: An optical imaging device of the present invention comprises: a light source device; a light guide and illumination lens, provided in an insertion section that can be inserted into a body cavity, for constituting an illumination light path for guiding an illumination light from the light source device to a subject; an objective lens for receiving return lights from the subject; an image capturing section for acquiring a visible light band image from the return light; an excitation light cut filter and image capturing section for acquiring a fluorescent image from the return lights; and an illumination light filter, provided on the illumination light path, for decreasing light in a band overlapping with the band of light of which image is captured by the image capturing section from the illumination light incident on.Type: GrantFiled: August 28, 2006Date of Patent: May 1, 2012Assignees: Olympus Medical Systems Corp., Olympus CorporationInventors: Yasushige Ishihara, Atsushi Okawa, Daisuke Akiyama, Katsuichi Imaizumi
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Patent number: 8131349Abstract: A lesion extracting device having a control unit for changing an amount of the excitation light emitted toward a subject body, a measuring unit for measuring a change in the intensity of fluorescence generated from the subject body with respect to a change in the amount of the excitation light, and an extracting unit for calculating a ratio of the change in the intensity of fluorescence on the basis of a ratio of the change in the amount of the excitation light to the change in the intensity of fluorescence and for extracting a lesion part of the subject body on the basis of the ratio of the changes in the amount of the excitation light to the ratio of the changes in the intensity of fluorescence.Type: GrantFiled: May 22, 2007Date of Patent: March 6, 2012Assignee: Olympus CorporationInventors: Atsushi Okawa, Tianyu Xie, Toshiaki Watanabe, Yasushige Ishihara
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Patent number: 8123679Abstract: The invention includes an insertion portion, one end of which is inserted inside a lumen of a subject; an image-acquisition unit for acquiring an image of an interior wall in the lumen as a substantially circular or substantially ring-shaped interior wall image; a transformation processing unit for transforming, in the interior wall image, at least substantially ring-shaped images concerning the interior wall, whose distance from the one end is uniform, to substantially straight-line-shaped or substantially band-shaped images; a distance-measuring unit for measuring a distance moved by the insertion portion relative to the subject; and an image synthesizing unit for joining the transformed images on the basis of the distance moved measured by the distance-measuring unit.Type: GrantFiled: August 31, 2007Date of Patent: February 28, 2012Assignee: Olympus CorporationInventors: Tianyu Xie, Atsushi Okawa, Yasushige Ishihara, Toshiaki Watanabe
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Publication number: 20110213562Abstract: A fluorescent agent accumulation concentration measuring apparatus is configured to include a single-wavelength LED to radiate excitation light to a test bottle loaded in the inside, a barrier filter to transmit only fluorescence from the test bottle, a photoreceptor to receive the fluorescence through the barrier filter and output an electric signal, a detection processing circuit to conduct signal processing of the electric signal from the photoreceptor and detect the fluorescence intensity, and an operation circuit 26 to compare the detection result from the detection processing circuit with an analytical pattern stored in a pattern storage portion and calculate the peak time of the accumulation concentration in a tissue of a sample in the test bottle.Type: ApplicationFiled: May 11, 2011Publication date: September 1, 2011Applicant: OLYMPUS CORPORATIONInventor: Atsushi Okawa
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Patent number: 7966051Abstract: A fluorescent agent accumulation concentration measuring apparatus is configured to include a single-wavelength LED to radiate excitation light to a test bottle loaded in the inside, a barrier filter to transmit only fluorescence from the test bottle, a photoreceptor to receive the fluorescence through the barrier filter and output an electric signal, a detection processing circuit to conduct signal processing of the electric signal from the photoreceptor and detect the fluorescence intensity, and an operation circuit 26 to compare the detection result from the detection processing circuit with an analytical pattern stored in a pattern storage portion and calculate the peak time of the accumulation concentration in a tissue of a sample in the test bottle.Type: GrantFiled: January 9, 2006Date of Patent: June 21, 2011Assignee: Olympus CorporationInventors: Tianyu Xie, Atsushi Okawa
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Publication number: 20100020163Abstract: A fluorescence endoscope is provided that can easily judge whether body-cavity tissue is benign or malignant when fluorescence generated at the entire inner circumferential face of the body cavity serving as a subject is observed.Type: ApplicationFiled: December 7, 2007Publication date: January 28, 2010Applicant: OLYMPUS CORPORATIONInventors: Toshiaki Watanabe, Atsushi Okawa, Yasushige Ishihara, Ryo Karasawa
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Patent number: 7427747Abstract: A control portion of an optical image pickup apparatus includes a scan driver, a lock-in amplifier, and an A/D converter. The scan driver outputs a predetermined drive signal to a Y-scanning mirror and an X-scanning mirror and scans the Y-scanning mirror and the X-scanning mirror. The lock-in amplifier detects a signal level Vout of a frequency component of the drive signal of the scan driver among signals detected by a detector portion. The A/D converter converts a signal detected by a detector portion and a signal level of the detected signal of a frequency component of a drive signal detected by the lock-in amplifier to digital signals and outputs the digital signals to an image processor. Thus, mirror scan operations of the scanning mirrors can be securely detected.Type: GrantFiled: July 27, 2006Date of Patent: September 23, 2008Assignee: Olympus CorporationInventors: Yasushige Ishihara, Atsushi Okawa, Hiroshi Tosaka, Tianyu Xie, Tadashi Hirata, Akihiro Horii, Kazunari Tokuda
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Publication number: 20080058594Abstract: The invention includes an insertion portion, one end of which is inserted inside a lumen of a subject; an image-acquisition unit for acquiring an image of an interior wall in the lumen as a substantially circular or substantially ring-shaped interior wall image; a transformation processing unit for transforming, in the interior wall image, at least substantially ring-shaped images concerning the interior wall, whose distance from the one end is uniform, to substantially straight-line-shaped or substantially band-shaped images; a distance-measuring unit for measuring a distance moved by the insertion portion relative to the subject; and an image synthesizing unit for joining the transformed images on the basis of the distance moved measured by the distance-measuring unit.Type: ApplicationFiled: August 31, 2007Publication date: March 6, 2008Applicant: OLYMPUS CORPORATIONInventors: Tianyu Xie, Atsushi Okawa, Yasushige Ishihara, Toshiaki Watanabe
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Publication number: 20070276184Abstract: To provide an endoscope system that includes a light source, an insertion part to be inserted into a living organism for guiding a illumination light emitted from the light source and a light returned from the living organism, a deflection optical system for outwardly directing the illumination light in a radius direction of the insertion part and for introducing a light inwardly returned from the living organism in the radius direction into the insertion part, a part for capturing the returned light, a part for detecting an insertion speed of the insertion part, a part for adjusting a frame rate for the image capturing of the image capturing part based on the detected insertion speed, an image forming part for arranging acquired images at a pitch based on the insertion speed to form an image of the inside of the living organism, and a part for displaying the formed image.Type: ApplicationFiled: May 24, 2007Publication date: November 29, 2007Applicant: Olympus CorporationInventor: Atsushi Okawa
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Publication number: 20070276259Abstract: A lesion extracting device comprises a light source for emitting an excitation light toward a subject body to be examined, a control unit for changing an amount of the excitation light, a light irradiating and receiving portion for irradiating the excitation light to the subject body and receiving fluorescence generated from the subject body, a distance holding member for holding a distance between the subject body and the light irradiating and receiving portion at a predetermined value, a measuring unit for measuring the intensity of the fluorescence received by the light irradiating and receiving portion, and an extracting unit for extracting a lesion part of the subject body based on relationships between measured values of changes in the fluorescence intensity with respect to changes in the amount of the excitation light and information regarding the changes in the amount of the excitation light, the information being obtained from the control unit.Type: ApplicationFiled: May 22, 2007Publication date: November 29, 2007Applicant: Olympus CorporationInventors: Atsushi Okawa, Tianyu Xie, Toshiaki Watanabe, Yasushige Ishihara
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Patent number: 7283247Abstract: An optical probe system comprises an optical probe that is inserted into a body cavity, a light source that generates light which is irradiated to an object, and a high-magnification observation unit included in the distal section of the optical probe. The optical probe system further comprises: an image digitization unit that digitizes a luminance signal produced by the high-magnification observation unit; an image parameter sampling unit that samples an image parameter from an image; an optimization parameter calculation unit that calculates an optimization parameter on the basis of the image parameter; an image optimization unit that optimizes an image according to the optimization parameter; an image display device on which an optimized image is displayed; and a digital image preservation unit in which a digitized image is preserved.Type: GrantFiled: September 22, 2003Date of Patent: October 16, 2007Assignee: Olympus CorporationInventors: Atsushi Okawa, Akihiro Horii, Tianyu Xie, Mitsuhiro Hara