Patents by Inventor Nobuyuki Matsuda
Nobuyuki Matsuda 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: 11946112Abstract: A high-strength steel sheet of the present invention has a specific chemical composition. Furthermore, in the steel sheet, a degree of Mn segregation in a specific region is 1.5 or less; a maximum P concentration in a specific region is 0.08 mass % or less; in a specific region, at least one specific MnS particle group is present, the number of specific MnS particle groups is 2.0 or fewer per 1 mm2, and the number of specific oxide-based inclusions is 8 or fewer per 1 mm2; of all oxide-based inclusions, oxide-based inclusions having a specific composition are present in a number ratio of 80% or greater; the microstructure includes, in terms of a volume fraction, 30 to 95% martensite, 5 to 70% ferrite phase, less than 30% (and 0% or greater) bainite, and less than 2.0% (and 0% or greater) austenite phase; and a tensile strength is 980 MPa or greater.Type: GrantFiled: August 22, 2019Date of Patent: April 2, 2024Assignee: JFE Steel CorporationInventors: Yoshihiko Ono, Yuma Honda, Shimpei Yoshioka, Koichi Taniguchi, Hiroshi Matsuda, Takeshi Murai, Nobuyuki Nakamura
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Publication number: 20240027870Abstract: An optical nonlinearity measurement method according to the present disclosure utilizes photon pair generation through a spontaneous four-wave mixing process, to observe photon pairs using an optical waveguide loaded with a two-dimensional material. Compared with the Z-scan method, the influence of free carriers on nonlinear refractive indexes is only indirect. With a parameter being the length of the attached two-dimensional material in the optical waveguide direction, a theoretical value of the coincidence rate of the photon pairs based on the coupled wave equation is fitted to a measured value of the coincidence rate of the photon pairs. For the coincidence rate of the photon pairs, the theoretical value based on the coupled wave equation is fitted to the measured value in a state reflecting the structure of the optical waveguide loaded with the two-dimensional material, and nonlinear coefficients ?1 and ?2 at that time are obtained.Type: ApplicationFiled: October 1, 2020Publication date: January 25, 2024Inventors: Yuya Yonezu, Atsushi Ishizawa, Hidetaka Nishi, Tai Tsuchizawa, Nobuyuki Matsuda, Rai Takahashi, Koji Yamada
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Patent number: 11013377Abstract: Provided is a toilet system that can provide more detailed information about a use state of a toilet. The toilet system includes: a detection unit (a door lock sensor, a seating sensor, a rotation sensor, a toilet washing switch, etc.) which detects a situation inside a toilet stall; and a control unit which determines, based on a detection result of the detection unit, that the toilet stall is in a vacant state or in an used state, and further makes at least one of a determination that the toilet stall in the used state is in a state immediately after a start of use and a determination that the toilet stall in the used state is in a state immediately before an end of use, and outputs a signal including determination results.Type: GrantFiled: January 17, 2018Date of Patent: May 25, 2021Assignee: LIXIL CorporationInventors: Hideki Katsurayama, Nobuyuki Matsuda, Haruka Ue, Taku Okawa, Yohei Yukitake, Yoshitaka Kouno
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Publication number: 20200029758Abstract: Provided is a toilet system that can provide more detailed information about a use state of a toilet. The toilet system includes: a detection unit (a door lock sensor, a seating sensor, a rotation sensor, a toilet washing switch, etc.) which detects a situation inside a toilet stall; and a control unit which determines, based on a detection result of the detection unit, that the toilet stall is in a vacant state or in an used state, and further makes at least one of a determination that the toilet stall in the used state is in a state immediately after a start of use and a determination that the toilet stall in the used state is in a state immediately before an end of use, and outputs a signal including determination results.Type: ApplicationFiled: January 17, 2018Publication date: January 30, 2020Applicant: LIXIL CorporationInventors: Hideki KATSURAYAMA, Nobuyuki MATSUDA, Haruka UE, Taku OKAWA, Yohei YUKITAKE, Yoshitaka KOUNO
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Publication number: 20190085544Abstract: A facility device includes a sensor which includes a light transmitting unit that transmits an optical signal and a light receiving unit that receives a reflected signal which is the optical signal transmitted from the light transmitting unit, reached a target object, and reflected, the light receiving unit transmitting a detection signal on the basis of the received reflected signal; and a panel which is arranged at a position in a first direction from the sensor. A display portion is provided on the panel, the display portion being configured to guide the target object to be placed at a predetermined position. The light transmitting unit includes a first light transmitting unit that is arranged to be capable of being directed toward a location which is in the first direction from the display portion. The display portion is arranged adjacent to the sensor in a front view of the facility device.Type: ApplicationFiled: September 13, 2018Publication date: March 21, 2019Applicant: LIXIL CorporationInventors: Hiroto KUTSUZAWA, Nobuyuki MATSUDA, Makoto KOTEGAWA, Keiko NAKAGAWA, Yoshifumi OGAWA, Tomokazu TOYA, Toshihiko KOMATSU, Kentarou TSUJI
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Patent number: 9216460Abstract: A coolant-hole equipped drill includes a drill main body, a cutting edge portion which has a tip flank, a chip discharging groove provided with a front groove wall surface and a rear groove wall surface, a cutting edge formed at a ridge line portion where the front groove wall surface and the tip flank intersect with each other, a land portion formed between the chip discharging grooves adjacent to each other in the rotating direction, and a coolant hole drilled at the land portion and opened at the tip flank. The coolant hole includes a front hole wall surface, a rear hole wall surface, and an outer-circumference hole wall surface.Type: GrantFiled: June 15, 2010Date of Patent: December 22, 2015Assignee: MITSUBISHI MATERIALS CORPORATIONInventors: Nobuyuki Matsuda, Hiroyuki Higashi, Koichiro Naruke, Tadashi Yamamoto, Kazuya Yanagida
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Publication number: 20120082524Abstract: A coolant-hole equipped drill includes a drill main body, a cutting edge portion which has a tip flank, a chip discharging groove provided with a front groove wall surface and a rear groove wall surface, a cutting edge formed at a ridge line portion where the front groove wall surface and the tip flank intersect with each other, a land portion formed between the chip discharging grooves adjacent to each other in the rotating direction, and a coolant hole drilled at the land portion and opened at the tip flank. The coolant hole includes a front hole wall surface, a rear hole wall surface, and an outer-circumference hole wall surface.Type: ApplicationFiled: June 15, 2010Publication date: April 5, 2012Applicant: Mitsubishi Materials CorporationInventors: Nobuyuki Matsuda, Hiroyuki Higashi, Koichiro Naruke, Tadashi Yamamoto, Kazuya Yanagida
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Patent number: 7652770Abstract: An optical nonlinear evaluation device (1) capable of accurately evaluating the optical nonlinearity of a Kerr medium in accordance with a phase difference caused by cross-phase modulation generated in the Kerr medium includes: a polarization Sagnac interference path (3) provided with a Kerr medium (4); an optical pulse light source (7) for supplying a signal beam (Dsig); a polarization beam splitter (PBS1) for splitting the signal beam (Dsig) into a signal beam (Hsig) and a signal beam (Vsig) polarized in a direction orthogonal to the signal beam (Hsig), for supplying the signal beam (Hsig) to a first side of the Kerr medium (4), and for supplying the signal beam (Vsig) to a second side of the Kerr medium (4); a glass plate (14) for entering, onto the signal beam (Hsig), a control beam (Vcont) for causing a change in phase difference between the signal beam (Hsig) and the signal beam (Vsig); separating means for separating the control beam (Vcont) from the signal beam (Hsig) having traveled through the KerrType: GrantFiled: December 6, 2006Date of Patent: January 26, 2010Assignee: Japan Science and Technology AgencyInventors: Keiichi Edamatsu, Ryosuke Shimizu, Nobuyuki Matsuda
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Publication number: 20090251703Abstract: An optical nonlinear evaluation device (1) capable of accurately evaluating the optical nonlinearity of a Kerr medium in accordance with a phase difference caused by cross-phase modulation generated in the Kerr medium includes: a polarization Sagnac interference path (3) provided with a Kerr medium (4); an optical pulse light source (7) for supplying a signal beam (Dsig); a polarization beam splitter (PBS1) for splitting the signal beam (Dsig) into a signal beam (Hsig) and a signal beam (Vsig) polarized in a direction orthogonal to the signal beam (Hsig), for supplying the signal beam (Hsig) to a first side of the Kerr medium (4), and for supplying the signal beam (Vsig) to a second side of the Kerr medium (4); a glass plate (14) for entering, onto the signal beam (Hsig), a control beam (Vcont) for causing a change in phase difference between the signal beam (Hsig) and the signal beam (Vsig); separating means for separating the control beam (Vcont) from the signal beam (Hsig) having traveled through the KerrType: ApplicationFiled: December 6, 2006Publication date: October 8, 2009Inventors: Keiichi Edamatsu, Ryosuke Shimizu, Nobuyuki Matsuda
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Patent number: 5865951Abstract: This invention relates to a process for papermaking which comprises forming a sheet in the presence of a neutral sizing agent and optionally a filler using as a paper quality improver a cationic polymer which is prepared by copolymerizing an acrylamide compound of the formula:CH.sub.2 .dbd.C(R.sub.1)CONH.sub.2wherein R.sub.1 is hydrogen atom or methyl group, and an inorganic or organic acid salt of a diallylamine compound of the formula:?CH.sub.2 .dbd.C(R.sub.2)CH.sub.2 !.sub.2 N--R.sub.3wherein R.sub.2 is hydrogen atom or methyl group, R.sub.3 is hydrogen atom or an alkyl having 1 to 6 carbon atoms, in the presence or absence of a vinyl monomer copolymerizable with said acrylamide compound and/or said diallylamine compound salt.When the above paper quality improver is used, the yield per each additive particularly in case of neutral or alkaline papermaking is excellent and hence the sizing properties are sufficiently given, and there can be obtained a paper having sufficiently improved paper strength.Type: GrantFiled: September 25, 1997Date of Patent: February 2, 1999Assignee: Sumitomo Chemical Company, LimitedInventors: Shigenao Kawakami, Nobuyuki Matsuda, Hiroshi Horiuchi, Norio Kondo
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Patent number: 5178944Abstract: A recording material comprising a base material and at least one polymer selected from the group consisting of a homopolymer of diallylamine, copolymers of diallyamine with (meth)acrylamide and optionally at least one other vinyl monomer having substantially no carboxyl group, and salts thereof which is contained in said base material or in a coating layer formed on said base material, on which an ink is printed with good initial coloring property and a printed image with higher resolution and improved water and light resistance.Type: GrantFiled: April 19, 1988Date of Patent: January 12, 1993Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hiroshi Horiuchi, Hirofumi Tsuka, Nobuyuki Matsuda
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Patent number: D602054Type: GrantFiled: May 11, 2009Date of Patent: October 13, 2009Assignee: Mitsubishi Materials CorporationInventors: Kazuya Yanagida, Hiroyuki Higashi, Nobuyuki Matsuda
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Patent number: D602055Type: GrantFiled: May 11, 2009Date of Patent: October 13, 2009Assignee: Mitsubishi Materials CorporationInventors: Kazuya Yanagida, Hiroyuki Higashi, Nobuyuki Matsuda