Patents by Inventor Naoto Hiramatsu

Naoto Hiramatsu 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: 20230174069
    Abstract: A driving control apparatus includes: an in-vehicle detector configured to detecting a situation around a vehicle; and a microprocessor and a memory coupled to the microprocessor. The microprocessor is configured to perform: recognizing an object in a predetermined area set in front of the vehicle base on the situation detected by the in-vehicle detector; calculating a reliability of a recognition result of the object in the recognizing; and controlling an actuator for traveling based the recognition result.
    Type: Application
    Filed: August 19, 2022
    Publication date: June 8, 2023
    Inventors: Shun Iwasaki, Nana Niibo, Naoto Hiramatsu
  • Publication number: 20230115845
    Abstract: A vehicle control device according to an embodiment includes an imager configured to image surroundings of a host vehicle, a recognizer configured to recognize a surroundings situation of the host vehicle, a driving controller configured to control one or both of speed and steering of the host vehicle on the basis of a result of the recognition of the recognizer, and a controller configured to control the driving controller on the basis of imaging content of the imager, and the controller sets relative position information with respect to the host vehicle for an object around the host vehicle present on a two-dimensional image captured by the imager, and corrects the recognition result of the recognizer on the basis of the set relative position information.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 13, 2023
    Inventors: Naoto Hiramatsu, Yoshimitsu Murahashi, Hiroshi Oguro, Daichi Kato, Katsuya Yashiro
  • Publication number: 20230114781
    Abstract: A vehicle control device according to an embodiment includes an imager configured to image surroundings of a host vehicle, a recognizer configured to recognize a surroundings situation of the host vehicle, a driving controller configured to control one or both of speed and steering of the host vehicle, and a controller configured to control the driving controller, wherein the controller determines a lane to which the object belongs, based on a positional relationship between left and right demarcation lines defining a host lane in which the host vehicle travels and left and right edges of an object present around the host vehicle, which are present on a two-dimensional image captured by the imager, and determines the lane to which the object belongs, based on the positional relationship between the recognized demarcation line and the edge of the object when one of the left and right demarcation lines is not recognized.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 13, 2023
    Inventors: Naoto Hiramatsu, Yoshimitsu Murahashi
  • Publication number: 20230115593
    Abstract: A vehicle control device according to an embodiment includes an imager configured to image surroundings of a host vehicle, a recognizer configured to recognize a surroundings situation of the host vehicle, a driving controller configured to control one or both of speed and steering of the host vehicle on the basis of a result of the recognition of the recognizer, and a controller configured to control the driving controller on the basis of imaging content of the imager, and the controller performs scanning on an object present around the host vehicle on a two-dimensional image captured by the imager at an angle serving as a predetermined angle upward from left and right lower ends of the two-dimensional image, and sets a point first coming in contact with the object as a ground contact point of the object.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 13, 2023
    Inventors: Naoto Hiramatsu, Yoshimitsu Murahashi
  • Publication number: 20230112878
    Abstract: A vehicle control device according to an embodiment includes an imager configured to image surroundings of a host vehicle, a recognizer configured to recognize a surroundings situation of the host vehicle, a driving controller configured to control one or both of speed and steering of the host vehicle on the basis of a result of the recognition of the recognizer, and a controller configured to control the driving controller on the basis of imaging content of the imager, and the controller determines a belonging lane of the object on the basis of a positional relationship between left and right demarcation lines of a traveling lane of the host vehicle and edges of an object present around the host vehicle on a two-dimensional image captured by the imager.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 13, 2023
    Inventors: Naoto Hiramatsu, Hiroshi Oguro, Yoshimitsu Murahashi
  • Publication number: 20220194376
    Abstract: A vehicle control apparatus includes a detection unit detecting a traveling position and a traveling speed of a subject vehicle and a microprocessor and a memory. The microprocessor is configured to perform acquiring a scheduled switching information of a traffic light located in the traveling direction of the subject vehicle, determining whether to perform a stop operation of stopping the subject vehicle at the road stop line based on the scheduled switching information, the traveling position and the traveling speed, and when it is determined to perform the stop operation, decelerating the subject vehicle at a deceleration equal to or less than a predetermined deceleration until the display mode is switched from the green color mode to the red color and decelerates the subject vehicle so that the subject vehicle stops at the stop line after the display mode is switched to the red color.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 23, 2022
    Inventors: Yohei Kitahara, Naoto Hiramatsu, Yoshimitsu Murahashi
  • Publication number: 20190034397
    Abstract: A non-transitory computer-readable storage medium storing a program that causes a computer to execute a process, the process including receiving an input of locus data of handwriting, determining whether at least one of a velocity and acceleration at a position forward or rearward from a turned-back position in a direction of the handwriting in a locus indicated by the locus data satisfies a first criterion based on the input locus data, and determining whether the received input is a deletion instruction based on whether the first criterion is satisfied.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Applicant: FUJITSU LIMITED
    Inventor: Naoto Hiramatsu
  • Publication number: 20090165905
    Abstract: A ferritic stainless steel sheet has a composition of C up to 0.02 mass %, Si up to 0.8 mass %, Mn up to 1.5 mass %, P up to 0.050 mass %, S up to 0.01 mass %, 8.0-35.0 mass % of Cr, N up to 0.05 mass %, 0.05-0.40 mass % of Ti and 0.10-0.50 mass % of Nb with a product of (% Ti % N) less than 0.005. Precipitates of 0.15 ?m or more in particle size except TiN are distributed in a steel matrix at a rate of 5000-50000/mm2. The steel sheet is manufactured by hot-rolling a slab at a finish-temperature of 800° C. or lower, annealing the hot-rolled steel sheet at 450-1080° C., cold-rolling the hot-rolled steel sheet in accompaniment with intermediate-annealing at a temperature within a range of from (a recrystallization-finishing temperature ?100° C.) to (a recrystallization-finishing temperature) and then finish-annealing the cold-rolled steel sheet at 1080° C. or lower.
    Type: Application
    Filed: March 3, 2009
    Publication date: July 2, 2009
    Applicant: Nisshin Steel Co., Ltd.
    Inventors: Yasutoshi Hideshima, Kouki Tomimura, Naoto Hiramatsu
  • Patent number: 7250071
    Abstract: A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not less than approximately 15 mass % of SiO2 and not more than approximately 40 mass % of Al2O3. During steel making, molten steel is covered with basic slag and heavily deoxidized with a Si alloy whose Al content is controlled to not more than approximately 1.0 mass % in a vacuum or non-oxidizing atmosphere. The austenitic stainless steel sheet can be formed to an objective shape without the occurrence of cracking due to its decrease in susceptibility to cracking and its good formability.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: July 31, 2007
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Junichi Katsuki, Teruyoshi Iida, Takashi Yamauchi, Satoshi Suzuki, Naoto Hiramatsu
  • Patent number: 7070663
    Abstract: A ferritic or martensitic stainless steel has the structure that Cu-enriched particles with concentration of C not less than 0.1 mass % or concentration of Sn and/or In not less than 10 mass % were dispersed in a matrix. Precipitation and dispersion of Cu-enriched particles is realized by aging the stainless steel at 500–900° C. for 1 hour or longer on any stage after a hot-rolling step until a forming step to a final product. The ferritic stainless steel contains 0.01–1.0% C, Si up to 1.0%, Mn up to 1.0%, 15–30% Cr, Ni up to 6.0% and 0.5–6.0% Cu. The martensitic stainless steel contains 0.01–0.5% C, Si up to 1.0%, Mn up to 1.0%, 10–15% Cr, Ni up to 6.0% and 0.5–6.0% Cu. Since Cu-enriched particles are dispersed for improvement of machinability instead of addition of S, Pb, Bi or Se, the stainless steel is machined to an objective shape without any harmful influence on workability, corrosion-resistance and the environment.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: July 4, 2006
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Satoshi Suzuki, Hideki Tanaka, Naoto Hiramatsu
  • Patent number: 7014719
    Abstract: An austenitic stainless steel comprising (C+½N) up to 0.060 mass %, Si up to 1.0 mass %, Mn up to 5 mass %, S up to 0.003 mass %, S/Mn ratio up to 0.003, 15–20 mass % Cr, 5–12 mass % Ni, Cu up to 5 mass %, 0–3.0 mass % Mo and the balance being Fe except inevitable impurities under the condition that a value Md30 (representing a ratio of a strain-induced martensite) defined by the under-mentioned formula is controlled within a range of ?60 to ?10. Hardness increase of the steel sheet after being cold-rolled is preferably 20% or more as Vickers hardness. A metallurgical structure of the steel sheet is preferably adjusted to grain size number of #8 to #11 in a finish annealed state. The steel sheet is blanked with high dimensional accuracy, and a die life is also prolonged. Md30=551?462(C+N)?9.2Si?29(Ni+Cu)?8.1Mn?13.7Cr?18.5Mo.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: March 21, 2006
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Satoshi Suzuki, Takashi Igawa, Hiroshi Fujimoto, Naoto Hiramatsu
  • Patent number: 6935529
    Abstract: A fuel tank for a motor vehicle is fabricated from an austenitic stainless steel sheet having elongation of 50% or more after fracture by a uniaxial stretching test with a work-hardening coefficient of 4000 N/mm2 or a ferritic stainless steel sheet having elongation of 30% or more after fracture with Lankford value of 1.3 or more. The stainless steel sheets are reformed to a complicated shape of a fuel tank without work flaws such as cracks or break-down. Excellent corrosion-resistance of stainless steel itself is maintained in the fabricated fuel tank. Consequently, the proposed fuel tank is used without diffusion of gasoline to the open air over a long term.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: August 30, 2005
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Hanji Ishikawa, Shigeru Morikawa, Toshirou Nagoya, Toshiro Adachi, Naoto Hiramatsu, Satoshi Suzuki
  • Publication number: 20040261915
    Abstract: A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not less than approximately 15 mass % of SiO2 and not more than approximately 40 mass % of Al2O3. During steel making, molten steel is covered with basic slag and heavily deoxidized with a Si alloy whose Al content is controlled to not more than approximately 1.0 mass % in a vacuum or non-oxidizing atmosphere. The austenitic stainless steel sheet can be formed to an objective shape without the occurrence of cracking due to its decrease in susceptibility to cracking and its good formability.
    Type: Application
    Filed: July 13, 2004
    Publication date: December 30, 2004
    Applicant: Nisshin Steel Co., Ltd.
    Inventors: Junichi Katsuki, Teruyoshi Iida, Takashi Yamauchi, Satoshi Suzuki, Naoto Hiramatsu
  • Publication number: 20040244884
    Abstract: A ferritic stainless steel sheet has a composition of C up to 0.02 mass %, Si up to 0.8 mass %, Mn up to 1.5 mass %, P up to 0.050 mass %, S up to 0.01 mass %, 8.0-35.0 mass % of Cr, N up to 0.05 mass %, 0.05-0.40 mass % of Ti and 0.10-0.50 mass % of Nb with a product of (% Ti×% N) less than 0.005. Precipitates of 0.15 &mgr;m or more in particle size except TiN are distributed in a steel matrix at a rate of 5000-50000/mm2. The steel sheet is manufactured by hot-rolling a slab at a finish-temperature of 800° C. or lower, annealing the hot-rolled steel sheet at 450-1080° C., cold-rolling the hot-rolled steel sheet in accompaniment with intermediate-annealing at a temperature within a range of from (a recrystallization-finishing temperature −100° C.) to (a recrystallization-finishing temperature) and then finish-annealing the cold-rolled steel sheet at 1080° C. or lower.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 9, 2004
    Applicant: NISSHIN STEELCO., LTD
    Inventors: Yasutoshi Hideshima, Kouki Tomimura, Naoto Hiramatsu
  • Patent number: 6802430
    Abstract: A fuel tank and a fuel-filler tube, which maintain excellent corrosion-resistance over a long term even in a severely corrosive atmosphere, is made of a ferritic stainless steel sheet good of formability. The steel sheet, which has elongation of 30% or more after fracture by a uniaxial tensile test and minimum Lankford value (value-rmin) of 1.3 or more, is formed to a product shape, and paint is cathodically electrodeposited on a surface of the formed stainless steel sheet. The stainless steel sheet may be one coated with an Al or Zn plating layer. When the fuel tank or fuel-filler tube is fabricated by welding, Zn-rich paint is preferably applied to a welded part in prior to cathodic electrodeposition coating.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: October 12, 2004
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Kouki Tomimura, Yasutoshi Hideshima, Naoto Hiramatsu, Toshiro Adachi, Kazushi Shirayama
  • Publication number: 20040168750
    Abstract: A high-strength dual-phase stainless steel strip has a chemical composition consisting of 0.04-0.15 mass % C, 10.0-20.0 mass % Cr, 0.5-4.0 mass % Ni and the balance being Fe except inevitable impurities, and a metallurgical structure composed of 20-85 vol. % martensite grains and the balance ferrite grains with prior austenite grains controlled to 10 &mgr;m or less in size. The stainless steel strip is conditioned to hardness of HV 300 or more. Transformation strains are uniformly distributed in a steel matrix during martensitic transformation, so that the steel strip is formed and straightened to a belt shape without Lüders band. Consequently, steel belts with fine external appearance are manufactured from the stainless steel strip.
    Type: Application
    Filed: December 10, 2003
    Publication date: September 2, 2004
    Inventors: Kouki Tomimura, Hiroshi Fujimoto, Kenichi Morimoto, Naoto Hiramatsu
  • Patent number: 6780258
    Abstract: A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not less than approximately 15 mass % of SiO2 and not more than approximately 40 mass % of Al2O3. During steel making, molten steel is covered with basic slag and heavily deoxidized with a Si alloy whose Al content is controlled to not more than approximately 1.0 mass % in a vacuum or non-oxidizing atmosphere. The austenitic stainless steel sheet can be formed to an objective shape without the occurrence of cracking due to its decrease in susceptibility to cracking and its good formability.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: August 24, 2004
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Junichi Katsuki, Teruyoshi Iida, Takashi Yamauchi, Satoshi Suzuki, Naoto Hiramatsu
  • Publication number: 20040140023
    Abstract: A ferritic stainless steel sheet, which is press-formed to a product shape without such dimensional defects as spring-back or torsion, has an alloying composition consisting of C up to 0.10%, Si up to 1.0%, Mn up to 1.0%, P up to 0.050%, S up to 0.020%, Ni up to 2.0%, 8.0-22.0% of Cr, N up to 0.05%, optionally one or more of Al up to 0.10%, Mo up to 1.0%, Cu up to 1.0%, 0.010-0.50% of Ti, 0.010-0.50% of Nb, 0.010-0.30% of V, 0.010-0.30% of Zr and 0.0010-0.0100% of B, and the balance being essentially Fe with the provision that a value-FM defined by the formula (1) is adjusted to 0 or less. Its mechanical properties are controlled to a plane anisotropic degree (rmax−rmin) of Lankford value (r) ≦0.80 and an anisotropic degree (&sgr;max−&sgr;min) of 0.2%-yield strength ≦20 N/mm2. The stainless steel sheet is manufactured by hot-rolling a stainless steel having the specified composition and then batch-annealing the hot-rolled steel sheet 1-24 hours at 700-800° C.
    Type: Application
    Filed: November 6, 2003
    Publication date: July 22, 2004
    Inventors: Kouki Tomimura, Hiroshi Fujimoto, Kenichi Morimoto, Yasutoshi Kunitake, Naoto Hiramatsu
  • Patent number: 6764555
    Abstract: A high-strength austenitic stainless steel strip exhibiting excellent flatness with Vickers hardness of 400 or more has the composition comprising: C up to 0.20 mass %, Si up to 4.0 mass %, Mn up to 5.0 mass %, 4.0-12.0 mass % Ni, 12.0-20.0 mass % Cr, Mo up to 5.0 mass %, N up to 0.15 mass % and the balance being Fe except inevitable impurities having a value Md(N) in a range of 0-125 defined by the formula Md(N)=580-520C-2Si-16Mn-16Cr-23Ni-26Cu-300N-10Mo. The material has a dual-phase structure of austenite and martensite involving a reverse-transformed austenite at a ratio of 3 vol. % or more. The material is manufactured by solution-heating a steel strip having the above composition, cold-rolling the steel strip to generate a deformation-induced martensite, and then re-heating at 500-700° C. to induce a phase reversion from martensite to at least 3 vol. % austenite. The reversion effectively flattens the steel strip.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: July 20, 2004
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Naoto Hiramatsu, Kouki Tomimura, Hiroshi Fujimoto, Kenichi Morimoto
  • Patent number: 6749701
    Abstract: A high-strength, high-toughness martensitic stainless steel sheet has a chemical composition comprising, in mass percent, more than 0.03 to 0.15% of C, 0.2-2.0% of Si, not more than 1.0% of Mn, not more than 0.06% of P, not more than 0.006% of S, 2.0-5.0% of Ni, 14.0-17.0% of Cr, more than 0.03 to 0.10% of N, 0.0010-0.0070% of B, and the balance of Fe and unavoidable impurities and has an A value of not less than −1.8, where A value=30(C+N)−1.5Si+0.5Mn+Ni−1.3Cr+11.8. The suitability of the steel sheet as a gasket material is enhanced by producing it to include not less than 85 vol % of martensite phase and to have a spring bending elastic limit Kb0.1 after application of tensile strain of 0.1% of not less than 700 N/mm2. Edge cracking during cold rolling is inhibited by conducting cold rolling after subjecting the hot-rolled sheet to 600-800° C.×10 hr or less intermediate annealing to impart a steel hardness of not greater than Hv 380.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: June 15, 2004
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Naoto Hiramatsu, Kouki Tomimura, Seiichi Isozaki