Patents by Inventor Takashi Fukuzawa
Takashi Fukuzawa 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: 20240126015Abstract: This optical coupler for coupling a plurality of visible light beams having different wavelengths includes: a substrate made of a material different from lithium niobate; and an optical coupling function layer formed on a main surface of the substrate. The optical coupling function layer includes: two multimode-interference-type optical coupling parts; optical-input-side waveguides and an optical-output-side waveguide connected to one multimode-interference-type optical coupling part, and optical-input-side waveguides and an optical-output-side waveguide connected to the other multimode-interference-type optical coupling part. The multimode-interference-type optical coupling parts, the optical-input-side waveguides, and the optical-output-side waveguides are made of a lithium niobate film.Type: ApplicationFiled: October 6, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Hajime UTSUNOMIYA, Yasuhiro TAKAGI, Hiroki HARA, Atsushi SHIMURA, Jiro YOSHINARI, Takashi KIKUKAWA, Tsuyoshi KOMAKI, Hideaki FUKUZAWA
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Patent number: 11827924Abstract: A PCR reaction vessel includes: a substrate; a channel formed on the substrate; a pair of filters, a first filter and a second filter, provided at respective ends of the channel; a pair of air communication ports, a first air communication port and a second air communication port, that communicate with the channel through the first filter and the second filter; a thermal cycle region formed between the first filter and the second filter in the channel; a branch point formed between the first filter and the second filter in the channel; a branched channel whose one end is connected to the branch point; and a sample introduction port formed at the other end of the branched channel.Type: GrantFiled: March 23, 2021Date of Patent: November 28, 2023Assignee: Go!Foton, Inc.Inventors: Takashi Fukuzawa, Hidenori Nagai, Naofumi Nishizawa
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Publication number: 20230256432Abstract: In a nucleic acid extraction container, a filter part includes: a hydrophilic filter for collecting biological materials containing a nucleic acid from a sample; a biological material collection area for collecting biological materials on the filter; and a sample permeation area for allowing the passage of a sample having permeated through the filter. A sample injection port communicates with the biological material collection area. An air communication port communicates with the biological material collection area. A sample discharge port communicates with the sample permeation area. The air communication port is configured so as to be outwardly openable and closable.Type: ApplicationFiled: August 5, 2021Publication date: August 17, 2023Inventor: Takashi FUKUZAWA
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Patent number: 11607687Abstract: A reaction processing vessel includes: a substrate; a channel for a sample to move that is formed on the substrate; a first air communication port and a second air communication port provided at respective ends of the channel; and a thermal cycle region for applying a thermal cycle to the sample that is formed between the first air communication port and the second air communication port in the channel. The channel includes a first branch channel and a second branch channel between the thermal cycle region and the first air communication port.Type: GrantFiled: April 30, 2019Date of Patent: March 21, 2023Assignee: Nippon Sheet Glass Company, LimitedInventor: Takashi Fukuzawa
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Patent number: 11579087Abstract: A reaction processing apparatus includes: a reaction processing vessel; a first fluorescence detection device that irradiates a sample with first excitation light and detects first fluorescence produced from the sample; and a second fluorescence detection device that irradiates a sample with second excitation light and detects second fluorescence produced from the sample. The wavelength range of the first fluorescence and the wavelength range of the second excitation light overlap at least partially. The first excitation light and the second excitation light flash at a predetermined duty ratio d. The phase difference between the flashing of the first excitation light and the flashing of the second excitation light is set within a range of 2?(pm??pm) (rad) to 2?(pm+?pm) (rad) or within a range of 2?[(1?pm)??pm] (rad) to 2?[(1?pm)+?pm] (rad), where pm=d?d2 and ?pm =0.01*pm.Type: GrantFiled: January 12, 2022Date of Patent: February 14, 2023Assignee: Nippon Sheet Glass Company, LimitedInventors: Takashi Fukuzawa, Hidemitsu Takeuchi, Osamu Kawaguchi
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Patent number: 11541394Abstract: A reaction processor is provided with a reaction processing vessel in which a channel is formed, a liquid feeding system, a temperature control system for providing a high temperature region and a low temperature region to the channel, and a fluorescence detector for detecting the sample passing through a fluorescence detection region of the channel, and a CPU for controlling the liquid feeding system based on a signal that is detected. A target stop position X[L]0(n+1) of the sample in the low temperature region in an (n+1)th cycle is corrected from a target stop position X[L]0(n) of the sample in the low temperature region in the nth cycle based on the result of stopping control on the sample in the nth cycle.Type: GrantFiled: November 19, 2019Date of Patent: January 3, 2023Assignees: Nippon Sheet Glass Company, Limited, Go!Foton, Inc.Inventors: Takashi Fukuzawa, Naofumi Nishizawa, Hisao Nagata
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Patent number: 11529631Abstract: A reaction processor includes: a reaction processing vessel including a channel in which a sample moves and a pair of air communication ports, a first air communication port and a second air communication port, provided at respective ends of the channel; a temperature control system that provides a medium temperature region and a high temperature region between the first air communication port and the second air communication port in the channel; and a liquid feeding system that discharges and sucks air in order to move and stop the sample inside the channel. One of the pair of air communication ports of the reaction processing vessel that is farther away from the high temperature region communicates with the liquid feeding system via a tube. One of the pair of air communication ports of the reaction processing vessel that is closer to the high temperature region is opened to atmospheric pressure.Type: GrantFiled: December 20, 2019Date of Patent: December 20, 2022Assignee: Nippon Sheet Glass Company, LimitedInventors: Takashi Fukuzawa, Osamu Kawaguchi
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Patent number: 11465143Abstract: A reaction processing vessel includes a substrate and a groove-like channel formed on the upper surface of the substrate. The channel includes a high temperature serpiginous channel, a medium temperature serpiginous channel, and a high temperature braking channel and a medium temperature braking channel that are adjacent to the high temperature serpiginous channel and the medium temperature serpiginous channel, respectively. The respective cross-sectional areas of the high temperature braking channel and the medium temperature braking channel are larger than the respective cross-sectional areas of the high temperature serpiginous channel and the medium temperature serpiginous channel, respectively.Type: GrantFiled: April 23, 2020Date of Patent: October 11, 2022Assignee: Nippon Sheet Glass Company, LimitedInventors: Hidemitsu Takeuchi, Osamu Kawaguchi, Takashi Fukuzawa
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Patent number: 11465150Abstract: A reaction processor is provided with a reaction processing vessel having a channel, a liquid feeding system, a temperature control system, and a fluorescence detector, and a CPU for controlling the liquid feeding system. When a sample moves from a low temperature region to a high temperature region, the CPU instructs the liquid feeding system to stop the sample when a predetermined first waiting time has passed from the time when the passage of the sample through a fluorescence detection region is detected by the fluorescence detector. When the sample moves from the high temperature region to the low temperature region, the CPU instructs the liquid feeding system to stop the sample when a predetermined second waiting time, which is set independently of the first waiting time, has passed from the time when the passage of the sample through the fluorescence detection region is detected by the fluorescence detector.Type: GrantFiled: November 16, 2018Date of Patent: October 11, 2022Assignee: Nippon Sheet Glass Company, LimitedInventor: Takashi Fukuzawa
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Publication number: 20220205916Abstract: A reaction processing apparatus includes: a reaction processing vessel; a first fluorescence detection device that irradiates a sample with first excitation light and detects first fluorescence produced from the sample; and a second fluorescence detection device that irradiates a sample with second excitation light and detects second fluorescence produced from the sample. The wavelength range of the first fluorescence and the wavelength range of the second excitation light overlap at least partially. The first excitation light and the second excitation light flash at a predetermined duty ratio d. The phase difference between the flashing of the first excitation light and the flashing of the second excitation light is set within a range of 2?(pm??pm) (rad) to 2?(pm+?pm) (rad) or within a range of 2?[(1?pm)??pm] (rad) to 2?[(1?pm)+?pm] (rad), where pm=d?d2 and ?pm =0.01*pm.Type: ApplicationFiled: January 12, 2022Publication date: June 30, 2022Applicant: Nippon Sheet Glass Company, LimitedInventors: Takashi FUKUZAWA, Hidemitsu TAKEUCHI, Osamu KAWAGUCHI
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Patent number: 11351552Abstract: A reaction processor includes: a reaction processing vessel placing portion for placing a reaction processing vessel provided with a channel into which a sample is introduced; a temperature control system, which controls the temperature of the channel in order to heat the sample inside the channel; and a liquid feeding system, which controls the pressure inside the channel of the reaction processing vessel in order to move the sample inside the channel. The liquid feeding system maintains the pressure inside the channel to be higher than the atmospheric pressure in the surrounding of the reaction processing vessel, more preferably 1 atm or higher, during a reaction process of the sample.Type: GrantFiled: July 2, 2018Date of Patent: June 7, 2022Assignees: Nippon Sheet Glass Company, Limited, National Institute of Advanced Industrial Science and TechnologyInventors: Takashi Fukuzawa, Hidenori Nagai
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Patent number: 11255789Abstract: A reaction processing apparatus includes: a reaction processing vessel; a first fluorescence detection device that irradiates a sample with first excitation light and detects first fluorescence produced from the sample; and a second fluorescence detection device that irradiates a sample with second excitation light and detects second fluorescence produced from the sample. The wavelength range of the first fluorescence and the wavelength range of the second excitation light overlap at least partially. The first excitation light and the second excitation light flash at a predetermined duty ratio d. The phase difference between the flashing of the first excitation light and the flashing of the second excitation light is set within a range of 2?(pm??pm) (rad) to 2?(pm+?pm) (rad) or within a range of 2?[(1?pm)??pm] (rad) to 2?[(1?pm)+?pm] (rad), where pm=d?d2 and ?pm=0.01*pm.Type: GrantFiled: September 22, 2020Date of Patent: February 22, 2022Assignee: Nippon Sheet Glass Company, LimitedInventors: Takashi Fukuzawa, Hidemitsu Takeuchi, Osamu Kawaguchi
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Publication number: 20220023861Abstract: A reaction processing vessel includes: a substrate made of resin; and a groove-like channel provided on a main surface of the substrate. The channel includes a bottom surface and a side surface. In a reaction channel for causing a sample to develop a predetermined reaction, the bottom surface and the side surface are connected by a curved surface.Type: ApplicationFiled: October 4, 2021Publication date: January 27, 2022Applicant: Nippon Sheet Glass Company, LimitedInventors: Osamu KAWAGUCHI, Takashi Fukuzawa, Hidemitsu Takeuchi
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Publication number: 20210245162Abstract: A reaction processor includes: a vessel installation unit for installing a reaction processing vessel provided with a channel formed in a substrate; a high temperature heater and a medium temperature heater for adjusting the temperature of the channel of the reaction processing vessel; a vessel alignment mechanism for adjusting the position of the reaction processing vessel 10; and a housing that has a housing main unit and a cover portion capable of being opened and closed with respect to the housing main unit and that houses the vessel installation unit, the high temperature heater, the medium temperature heater, and the vessel alignment mechanism. In conjunction with the state of the cover portion being changed from an open state to a closed state, the vessel alignment mechanism aligns the reaction processing vessel such that the reaction processing vessel can be heated by the high temperature heater and the medium temperature heater.Type: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Applicant: Nippon Sheet Glass Company, LimitedInventor: Takashi FUKUZAWA
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Publication number: 20210207205Abstract: A PCR reaction vessel includes: a substrate; a channel formed on the substrate; a pair of filters, a first filter and a second filter, provided at respective ends of the channel; a pair of air communication ports, a first air communication port and a second air communication port, that communicate with the channel through the first filter and the second filter; a thermal cycle region formed between the first filter and the second filter in the channel; a branch point formed between the first filter and the second filter in the channel; a branched channel whose one end is connected to the branch point; and a sample introduction port formed at the other end of the branched channel.Type: ApplicationFiled: March 23, 2021Publication date: July 8, 2021Applicants: Nippon Sheet Glass Company, Limited, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Go!Foton, Inc.Inventors: Takashi FUKUZAWA, Hidenori NAGAI, Naofumi NISHIZAWA
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Patent number: 11020746Abstract: A reaction processor includes: a vessel installation unit for installing a reaction processing vessel provided with a channel formed in a substrate; a high temperature heater and a medium temperature heater for adjusting the temperature of the channel of the reaction processing vessel; a vessel alignment mechanism for adjusting the position of the reaction processing vessel 10; and a housing that has a housing main unit and a cover portion capable of being opened and closed with respect to the housing main unit and that houses the vessel installation unit, the high temperature heater, the medium temperature heater, and the vessel alignment mechanism. In conjunction with the state of the cover portion being changed from an open state to a closed state, the vessel alignment mechanism aligns the reaction processing vessel such that the reaction processing vessel can be heated by the high temperature heater and the medium temperature heater.Type: GrantFiled: June 5, 2019Date of Patent: June 1, 2021Assignee: Nippon Sheet Glass Company, LimitedInventor: Takashi Fukuzawa
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Patent number: 10988800Abstract: A PCR reaction vessel includes: a substrate; a channel formed on the substrate; a pair of filters, a first filter and a second filter, provided at respective ends of the channel; a pair of air communication ports, a first air communication port and a second air communication port, that communicate with the channel through the first filter and the second filter; a thermal cycle region formed between the first filter and the second filter in the channel; a branch point formed between the first filter and the second filter in the channel; a branched channel whose one end is connected to the branch point; and a sample introduction port formed at the other end of the branched channel.Type: GrantFiled: May 31, 2018Date of Patent: April 27, 2021Assignees: Nippon Sheet Glass Company, Limited, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Go!Foton, Inc.Inventors: Takashi Fukuzawa, Hidenori Nagai, Naofumi Nishizawa
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Publication number: 20210102897Abstract: A reaction processor includes: a reaction processing vessel; a first optical head including a first objective lens OB1 for irradiating a sample with first excitation light and collecting first fluorescence generated from the sample; a second optical head including a second objective lens for irradiating a sample with second excitation light and collecting second fluorescence generated from the sample; and a holding member holding the first optical head and the second optical head. The wavelength range of the first fluorescence and the wavelength range of the second excitation light at least partially overlap with each other. A distance between the optical axis of the first objective lens and the optical axis of the second objective lens satisfies 2·P0+2·P1+4·P2+4·P3<P, P0=L·NA/?(1?NA2), P1=t1·NA/?(n12?NA2), P2=t2·NA/?(1?NA2), and P3=t3·NA/?(n32?NA2).Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Applicant: Nippon Sheet Glass Company, LimitedInventors: Shuya OGI, Takashi Fukuzawa
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Patent number: D928344Type: GrantFiled: October 21, 2019Date of Patent: August 17, 2021Assignee: Nippon Sheet Glass Company, LimitedInventors: Hidemitsu Takeuchi, Osamu Kawaguchi, Takashi Fukuzawa
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Patent number: D933257Type: GrantFiled: October 2, 2019Date of Patent: October 12, 2021Assignee: Nippon Sheet Glass Company, LimitedInventors: Takashi Fukuzawa, Hidemitsu Takeuchi, Osamu Kawaguchi