Patents by Inventor Tomohiro Nakagawa

Tomohiro Nakagawa 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).

  • Patent number: 11453997
    Abstract: A work implement includes a breaker. Sensors detect an attitude of the work implement. A pilot valve controls the operation of the breaker. A controller controls the pilot valve. The controller detects, from the attitude of the work implement obtained by the sensors, a distance between a tip of the breaker and a striking limit. When it is determined that the tip of the breaker has reached the striking limit, the controller controls the pilot valve to stop the operation of the breaker.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: September 27, 2022
    Assignee: KOMATSU LTD.
    Inventors: Kenji Ohiwa, Tomohiro Nakagawa, Ryuji Kanda
  • Publication number: 20220301003
    Abstract: An area specifying system is a system for specifying an area in which information presented by an information medium is recognizable as the information, and includes a medium position information acquisition unit configured to acquire medium position information indicating a position in which the information medium is provided, an area specifying information acquisition unit configured to acquire area specifying information related to at least one of attributes of the information medium and content of the information presented by the information medium, and a specifying unit configured to specify the area based on the medium position information acquired by the medium position information acquisition unit and the area specifying information acquired by the area specifying information acquisition unit.
    Type: Application
    Filed: April 28, 2020
    Publication date: September 22, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Kazuya SASAKI
  • Publication number: 20220295228
    Abstract: An environment estimation device 1 includes: an information storage unit 11 configured to store base station information in which a serving timing at which a mobile terminal 2 is served in a radio communication range of a base station 3 and environment information indicating an environment of the base station 3 are correlated; an information acquiring unit 10 configured to acquire position information including position data of the mobile terminal 2 acquired by positioning and a positioning timing; and an estimation unit 13 configured to estimate, based on the positioning timing included in the position information of the mobile terminal 2 acquired by the information acquiring unit 10 and the base station information stored in the information storage unit 11, an environment of the mobile terminal 2 at a position indicated by the position data included in the position information.
    Type: Application
    Filed: October 1, 2020
    Publication date: September 15, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki KINJOU, Tomohiro NAKAGAWA, Kazuya SASAKI
  • Patent number: 11432111
    Abstract: A server performs: acquiring measurement data of a mobile terminal; extracting fixed AP measurement data of a specific fixed AP; extracting measurement data including a measurement time of which a difference from the measurement time in the fixed AP measurement data is equal to or less than a threshold value, position information of which a difference from a position of the specific fixed AP is equal to or less than a threshold value, and a reception intensity of which a difference from the reception intensity in the fixed AP measurement data is equal to or less than a threshold value as target measurement data and to set the radio access point corresponding to the target measurement data as a target AP; and determining whether the target AP corresponds to a fixed AP on the basis of the measurement data corresponding to the target AP and the fixed AP measurement data.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 30, 2022
    Assignee: NTT DOCOMO, INC.
    Inventors: Tomohiro Nakagawa, Atsushi Wada, Shoichi Horiguchi, Junkou Katou
  • Publication number: 20220232348
    Abstract: A traffic amount estimation system is a traffic amount estimation system that estimates a traffic amount of people in a predetermined time frame in an area that is an estimation target set in advance, the traffic amount estimation system including: a population information acquiring unit configured to acquire population information representing a population at a predetermined timing in the area that is the estimation target; a movement state information acquiring unit configured to acquire movement state information representing a movement state of each of a plurality of people in the area that is the estimation target; and an estimation unit configured to group the movement state information in accordance with moving directions represented by the movement state information and estimate the traffic amount on the basis of the grouped movement state information and the population information.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 21, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Takuya DOUMEN, Tomohiro NAKAGAWA, Kazuya SASAKI
  • Patent number: 11384514
    Abstract: An earthmoving machine of a work vehicle or the like includes: a work implement including a bucket having teeth; and a main controller that obtains design data based on a dimension obtained from manufacturing data of a component included in the work implement, and used for calculating the position of the teeth, and uses the design data to calculate the position of the teeth.
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: July 12, 2022
    Assignee: KOMATSU LTD.
    Inventors: Yuki Shimano, Tomohiro Nakagawa
  • Patent number: 11359349
    Abstract: A work vehicle includes a traveling unit, a revolving unit disposed on an upper side of the traveling unit, a work implement disposed on the revolving unit, a revolving driver that revolves the revolving unit, a receiver, an end position setting component, a revolution position sensor, and a drive controller. The receiver directly or indirectly receives information related to a position of an object serving as a target of a revolution of the revolving unit, from the object. The end position setting component sets an end position of a revolution of the revolving unit based on information related to the position of the object. The revolution position sensor senses a revolution position of the revolving unit during a revolution. The drive controller controls the revolving driver based on the revolution position to revolve the revolving unit from a start position of a revolution to the end position.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: June 14, 2022
    Assignee: KOMATSU LTD.
    Inventors: Kenji Ohiwa, Tomohiro Nakagawa
  • Publication number: 20220177718
    Abstract: An ink contains organic solvents containing 1,2-propane diol and 1,2-hexane diol, a pigment, water, and a polyoxyethylene ether compound.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 9, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kazuhiko Umemura, Sei Yamamoto, Yuya Hirokawa, Hiroki Hagiwara, Takuya Saiga, Tomohiro Nakagawa
  • Publication number: 20220169034
    Abstract: Provided is a processing fluid including nonionic acrylic resin particles, and a polyvalent metal salt. A volume average particle diameter of the nonionic acrylic resin particles is 100 nm or greater but 300 nm or less. A proportion of the nonionic acrylic resin particles in the processing fluid is greater than 2.0% by mass. An average reflectance of the processing fluid to light having a wavelength of 400 nm or greater but 700 nm or less is 70% or greater.
    Type: Application
    Filed: November 22, 2021
    Publication date: June 2, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroki HAGIWARA, Tomohiro Nakagawa, Sei Yamamoto, Kazuhiko Umemura, Yuya Hirokawa, Takuya Saiga, Risa Tamura
  • Patent number: 11292931
    Abstract: An inkjet ink comprising a resin and a polyvalent metal ion is provided. The resin contains a resin (1) having a structural unit represented by the following general formula (1): ā€”(CH2CH2O)nā€”??general formula (1) where n represents an integer of 5 to 100. A dried film obtained by drying the resin having the structural unit represented by the general formula (1) has a storage modulus of 1.0Ɨ108 Pa or lower in a dynamic viscoelasticity measurement at 25 degrees C.
    Type: Grant
    Filed: March 17, 2019
    Date of Patent: April 5, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoyuki Sekiguchi, Tomohiro Nakagawa, Toshiyuki Kobashi
  • Publication number: 20220056298
    Abstract: Provided is a processing fluid including: water; a flocculant; and a urethane resin. A dry film formed of the processing fluid and having an average thickness of 500 micrometers has a tensile strength of 3.5 MPa or greater and a breaking elongation of 80% or greater.
    Type: Application
    Filed: July 27, 2021
    Publication date: February 24, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Kazuhiko Umemura, Tomohiro Nakagawa, Hiroki Hagiwara, Sei Yamamoto, Masayuki Koyano, Yuya Hirokawa, Takuya Saiga
  • Publication number: 20220056299
    Abstract: A printing method includes: a processing fluid applying step of applying a processing fluid containing silica and a multivalent metal salt to a print medium; and an ink applying step of applying an ink containing a coloring material and water to the print medium. The print medium has a Cobb water absorption of 20 g/m2 or greater but 75 g/m2 or less when contacted with water for 120 seconds. The Cobb water absorption is stipulated by JIS-P8140.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 24, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Sei Yamamoto, Tomohiro Nakagawa, Kazuhiko Umemura, Masayuki Koyano, Yuya Hirokawa, Takuya Saiga, Hiroki Hagiwara
  • Publication number: 20220007143
    Abstract: An object is to provide a population distribution aggregation calculation device which can calculate a population distribution of high accuracy.
    Type: Application
    Filed: July 16, 2019
    Publication date: January 6, 2022
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Kazuya SASAKI
  • Publication number: 20210385616
    Abstract: An object is to provide a moving route determination device that makes it possible to accurately determine a user's moving route. A server device 100 includes a geofence evaluation unit 105 configured to store a scoring table for determining a moving route of a user terminal 200, a check-in log acquisition unit 103 configured to acquire at least one of a check-in log which is a history of position management information, such as check-in information, settlement information, or search information, indicating that the user terminal 200 is located in a predetermined range, a settlement log, and a search log as a position management log, and a scoring determination unit 106 configured to determine a moving route of the user terminal 200 on the basis of the position management log and determination information stored in the geofence evaluation unit 105 in a case where a moving means is not able to be determined from at least one of the check-in log, the settlement log, and the search log.
    Type: Application
    Filed: July 23, 2019
    Publication date: December 9, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomohiro NAKAGAWA, Takuya DOUMEN, Chao XUE
  • Patent number: 11186737
    Abstract: An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: November 30, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Nakagawa, Hiroki Hagiwara, Yuutaroh Nonaka, Kazuhiko Umemura
  • Publication number: 20210292578
    Abstract: An ink contains water, Pigment Red 269, a compound represented by the following Chemical formula (1), and at least one of a silicone compound and an acetylene glycol compound, where the proportion of the compound represented by the following Chemical formula (1) to the Pigment Red 269 is 2.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 23, 2021
    Inventors: Tomohiro NAKAGAWA, Hiroki HAGIWARA, Yuutaroh NONAKA, Yuusuke FUJITA, Kazuhiko UMEMURA, Sei YAMAMOTO
  • Patent number: 11105072
    Abstract: A work vehicle includes: a display device provided in a cab and configured to display work assistance information to be overlaid on an actual view of a work site; a bucket position detector configured to detect a position of a bucket; and a display controller configured to control a content to be displayed on the display device and configured to cause the work assistance information to be displayed around the bucket while causing the work assistance information to follow the movement of the bucket based on the detected position. When work assistance information becomes close to a boundary of a display area of the display device due to the movement of the bucket, the display controller is configured to cause the work assistance information to be displayed on the display device with a relative position between the work assistance information and the bucket in the display area being changed.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 31, 2021
    Assignee: KOMATSU LTD.
    Inventors: Kenji Ohiwa, Masao Yamamura, Tomohiro Nakagawa
  • Patent number: 11098216
    Abstract: An image forming method for forming an image on a non-absorbable substrate includes (a) applying a surface processing composition including water, a first organic solvent, and a urethane resin particle to the non-absorbable substrate, (b) applying a non-white ink including water, a second organic solvent, and a second acrylic resin particle and (c) applying a white ink including water, a third organic solvent, a third acrylic resin particle, and a white colorant.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yukihiro Imanaga, Tomohiro Nakagawa, Juichi Furukawa, Satoyuki Sekiguchi, Ayaka Tanaka
  • Publication number: 20210235226
    Abstract: A server performs: acquiring measurement data of a mobile terminal; extracting fixed AP measurement data of a specific fixed AP; extracting measurement data including a measurement time of which a difference from the measurement time in the fixed AP measurement data is equal to or less than a threshold value, position information of which a difference from a position of the specific fixed AP is equal to or less than a threshold value, and a reception intensity of which a difference from the reception intensity in the fixed AP measurement data is equal to or less than a threshold value as target measurement data and to set the radio access point corresponding to the target measurement data as a target AP; and determining whether the target AP corresponds to a fixed AP on the basis of the measurement data corresponding to the target AP and the fixed AP measurement data.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 29, 2021
    Applicant: NTT DOCOMO, INC.
    Inventors: Tomohiro NAKAGAWA, Atsushi WADA, Shoichi HORIGUCHI, Junkou KATOU
  • Patent number: 10954655
    Abstract: A work vehicle includes a work implement, a main body, a bucket position detector, a display device, and a display controller. The work implement has a bucket. To the main body, the work implement is attached, and the main body has a cab. The bucket position detector detects a position of the bucket. The display device is provided in the cab and configured to overlay and thus display work assistance information on an actual view of a work site. The display controller is configured to change displaying of the work assistance information on the display device based on a distance between the position of the bucket detected by the bucket position detector and design topography.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: March 23, 2021
    Assignee: KOMATSU LTD.
    Inventors: Kenji Ohiwa, Masao Yamamura, Tomohiro Nakagawa