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).

  • Publication number: 20210088445
    Abstract: 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: Application
    Filed: September 22, 2020
    Publication date: March 25, 2021
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Takashi FUKUZAWA, Hidemitsu TAKEUCHI, Osamu KAWAGUCHI
  • Publication number: 20200398276
    Abstract: A reaction processing apparatus includes: a reaction processing vessel; a temperature control system; and a liquid feeding system. The liquid feeding system includes : a pump having a discharge port; a first air channel; a second air channel; a first three-way valve capable of being switched between a state in which a first air communication port communicates with the discharge port and a state in which the first air communication port is opened to the atmospheric pressure; a second three-way valve capable of being switched between a state in which a second air communication port communicates with the discharge port and a state in which the second air communication port is opened to the atmospheric pressure; and a CPU that controls these components.
    Type: Application
    Filed: July 14, 2020
    Publication date: December 24, 2020
    Applicant: Nippon Sheet Glass Company Limited
    Inventors: Takashi Fukuzawa, Osamu Kawaguchi, Hidemitsu Takeuchi
  • Publication number: 20200384465
    Abstract: 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: Application
    Filed: April 23, 2020
    Publication date: December 10, 2020
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Hidemitsu TAKEUCHI, Osamu KAWAGUCHI, Takashi FUKUZAWA
  • Publication number: 20200139371
    Abstract: 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: Application
    Filed: December 20, 2019
    Publication date: May 7, 2020
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Takashi Fukuzawa, Osamu Kawaguchi
  • Publication number: 20200086313
    Abstract: 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: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Applicants: Nippon Sheet Glass Company, Limited, Go!Foton, Inc.
    Inventors: Takashi FUKUZAWA, Naofumi NISHIZAWA, Hisao NAGATA
  • Publication number: 20190283031
    Abstract: 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: Application
    Filed: June 5, 2019
    Publication date: September 19, 2019
    Applicant: Nippon Sheet Glass Company, Limited
    Inventor: Takashi FUKUZAWA
  • Publication number: 20190255525
    Abstract: 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: Application
    Filed: April 30, 2019
    Publication date: August 22, 2019
    Applicant: Nippon Sheet Glass Company, Limited
    Inventor: Takashi FUKUZAWA
  • Publication number: 20190099759
    Abstract: 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: Application
    Filed: November 16, 2018
    Publication date: April 4, 2019
    Applicant: Nippon Sheet Glass Company, Limited
    Inventor: Takashi FUKUZAWA
  • Publication number: 20180311673
    Abstract: 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: Application
    Filed: July 2, 2018
    Publication date: November 1, 2018
    Applicants: Nippon Sheet Glass Company, Limited, National Institute of Advanced Industrial Science and Technology
    Inventors: Takashi FUKUZAWA, Hidenori NAGAI
  • Publication number: 20180274019
    Abstract: 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: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Applicants: Nippon Sheet Glass Company, Limited, National Institute of Advanced Industrial Science and Technology, Go!Foton, Inc.
    Inventors: Takashi FUKUZAWA, Hidenori NAGAI, Naofumi NISHIZAWA
  • Patent number: 9250184
    Abstract: A status estimation device for ultraviolet curable resin includes a probe configured to irradiate an ultraviolet curable resin with excitation light, a wavelength demultiplexer configured to receive fluorescence produced from the ultraviolet curable resin and detect spectral distribution of the fluorescence, and a computer configured to estimate status of the ultraviolet curable resin by comparing a shape of pre-irradiation spectral distribution detected when the ultraviolet curable resin is irradiated by excitation light before being irradiated by ultraviolet radiation with a shape of post-irradiation spectral distribution detected when the ultraviolet curable resin is irradiated by excitation light after being irradiated by ultraviolet radiation.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 2, 2016
    Assignee: Nippon Sheet Glass Company, Limited
    Inventor: Takashi Fukuzawa
  • Patent number: 9244007
    Abstract: A degree of cure measuring apparatus has: a second optical fiber for emitting light from a tip face thereof; a probe for holding adhesive agent and irradiating the adhesive agent with light while the adhesive agent is in contact with the tip face of the second optical fiber; a detector for detecting light that is reflected from an interface between the tip face of the second optical fiber and the adhesive agent and then returns to the second optical fiber; and a computer for calculating the refractive index of the adhesive agent from the rate of the light amount of the light detected by the detector to the emission light amount from the tip face of the second optical fiber.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: January 26, 2016
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Takashi Fukuzawa, Hiroyuki Tanaka
  • Publication number: 20140071454
    Abstract: A degree of cure measuring apparatus has: a second optical fiber for emitting light from a tip face thereof; a probe for holding adhesive agent and irradiating the adhesive agent with light while the adhesive agent is in contact with the tip face of the second optical fiber; a detector for detecting light that is reflected from an interface between the tip face of the second optical fiber and the adhesive agent and then returns to the second optical fiber; and a computer for calculating the refractive index of the adhesive agent from the rate of the light amount of the light detected by the detector to the emission light amount from the tip face of the second optical fiber.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Takashi FUKUZAWA, Hiroyuki TANAKA
  • Publication number: 20120327401
    Abstract: A degree of cure measuring apparatus has: a second optical fiber for emitting light from a tip face thereof; a probe for holding adhesive agent and irradiating the adhesive agent with light while the adhesive agent is in contact with the tip face of the second optical fiber; a detector for detecting light that is reflected from an interface between the tip face of the second optical fiber and the adhesive agent and then returns to the second optical fiber; and a computer for calculating the refractive index of the adhesive agent from the rate of the light amount of the light detected by the detector to the emission light amount from the tip face of the second optical fiber.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Takashi FUKUZAWA, Hiroyuki TANAKA
  • Patent number: 8263945
    Abstract: An optical wavelength demultiplexing detector for fluorescence analysis that is compact, has a small number of components, and is easy to assemble. An excitation light received via a first optical transmission path is outputted to a second optical transmission path, and a fluorescence arising from the excitation light outputted from the second optical transmission path is received via the second optical transmission path and detected. The excitation light having propagated through the first optical transmission path and the fluorescence having propagated through the second optical transmission path are received by the same surface of a first lens. An optical wavelength selection member comprised of a dielectric multilayer film receives the excitation light and the fluorescence passed through the first lens, and reflects the excitation light and passes the fluorescence. A photoelectric conversion element directly receives the fluorescence passed through the first optical wavelength selection member.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: September 11, 2012
    Assignee: Nippon Sheet Glass Company, Limited
    Inventor: Takashi Fukuzawa
  • Publication number: 20120077895
    Abstract: A status estimation device for ultraviolet curable resin includes a probe configured to irradiate an ultraviolet curable resin with excitation light, a wavelength demultiplexer configured to receive fluorescence produced from the ultraviolet curable resin and detect spectral distribution of the fluorescence, and a computer configured to estimate status of the ultraviolet curable resin by comparing a shape of pre-irradiation spectral distribution detected when the ultraviolet curable resin is irradiated by excitation light before being irradiated by ultraviolet radiation with a shape of post-irradiation spectral distribution detected when the ultraviolet curable resin is irradiated by excitation light after being irradiated by ultraviolet radiation.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventor: Takashi FUKUZAWA
  • Patent number: 8110816
    Abstract: A fluorescence detection system capable of detecting fluorescence with a high sensitivity even if a sample generating fluorescence is small in amount includes a light source emitting excitation light, a probe arranged in opposition to a sample unit, an optical multiplexer/demultiplexer, a detector, a first optical fiber connecting the light source to the optical multiplexer/demultiplexer, a second optical fiber connecting the probe to the optical multiplexer/demultiplexer, and a third optical fiber connecting the detector to the optical multiplexer/demultiplexer. An excitation filter, serving as a short-pass filter, is arranged on the first optical fiber and a detection filter serving as a long-pass filter is arranged on the third optical fiber. The optical multiplexer/demultiplexer includes a multiplexing/demultiplexing filter serving as a long-pass filter.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: February 7, 2012
    Assignee: Nippon Sheet Glass Company, Limited
    Inventor: Takashi Fukuzawa
  • Patent number: 8063384
    Abstract: There is provided a detection system capable of simultaneously detecting a plurality of fluorescences or phosphorescences having different dominant wavelengths generated from a minute region and a probe therefor. A fluorescence detection system includes a probe having a lens and optical fibers and arranged on one end thereof. The probe receives excitation light with a dominant wavelength and excitation light with a dominant wavelength at one end of the lens and converges the excitation lights at the solution containing Cy3 and Cy5 in a channel inside a microchemical chip and the probe receives fluorescence with a dominant wavelength and fluorescence with a dominant wavelength at the other end of the lens and converges the fluorescences at the tips of the optical fibers.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: November 22, 2011
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Takashi Fukuzawa, Jun Yamaguchi
  • Publication number: 20100294948
    Abstract: An optical wavelength demultiplexing detector for fluorescence analysis that is compact, has a small number of components, and is easy to assemble. An excitation light received via a first optical transmission path is outputted to a second optical transmission path, and a fluorescence arising from the excitation light outputted from the second optical transmission path is received via the second optical transmission path and detected. The excitation light having propagated through the first optical transmission path and the fluorescence having propagated through the second optical transmission path are received by the same surface of a first lens. An optical wavelength selection member comprised of a dielectric multilayer film receives the excitation light and the fluorescence passed through the first lens, and reflects the excitation light and passes the fluorescence. A photoelectric conversion element directly receives the fluorescence passed through the first optical wavelength selection member.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 25, 2010
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventor: Takashi FUKUZAWA
  • Publication number: 20100243915
    Abstract: A fluorescence detection system capable of detecting fluorescence with a high sensitivity even if a sample generating fluorescence is small in amount includes a light source emitting excitation light, a probe arranged in opposition to a sample unit, an optical multiplexer/demultiplexer, a detector, a first optical fiber connecting the light source to the optical multiplexer/demultiplexer, a second optical fiber connecting the probe to the optical multiplexer/demultiplexer, and a third optical fiber connecting the detector to the optical multiplexer/demultiplexer. An excitation filter, serving as a short-pass filter, is arranged on the first optical fiber and a detection filter serving as a long-pass filter is arranged on the third optical fiber. The optical multiplexer/demultiplexer includes a multiplexing/demultiplexing filter serving as a long-pass filter.
    Type: Application
    Filed: February 20, 2008
    Publication date: September 30, 2010
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventor: Takashi Fukuzawa