Patents by Inventor Tadashi Nakamura

Tadashi Nakamura 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: 10600802
    Abstract: A first alternating stack of first insulating layers and first spacer layers, an inter-tier dielectric layer, a sacrificial memory opening fill structure, and a second alternating stack of second insulating layers and second spacer layers are formed over a substrate. The spacer layers are formed as, or are subsequently replaced with, electrically conductive layers. A concave downward-facing surface of the inter-tier dielectric layer is formed on a convex upper surface of the sacrificial memory opening fill structure. An inter-tier memory opening is provided by forming second-tier memory opening and removing the sacrificial memory opening fill structure. A memory stack structure including a memory film is formed in the inter-tier memory opening. The memory film includes a rounded top surface at the joint between tiers to enhance its reliability.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: March 24, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Tadashi Nakamura, Kota Funayama
  • Patent number: 10591602
    Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: March 17, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
  • Publication number: 20190391244
    Abstract: A distance-measuring apparatus, a mobile object, a distance-measuring method, and a distance-measuring system. The distance-measuring apparatus and the distance-measuring method include performing matching for a plurality of images obtained by a plurality of imaging devices to convert the plurality of images into first distance information on a pixel-by-pixel basis, emitting a laser beam where at least one of a laser-beam resolution in a horizontal direction and a laser-beam resolution in a vertical direction exceeds two degrees, obtaining a reflected signal obtained when the laser beam is reflected by an object, detecting a peak that corresponds to reflection from the object from the reflected signal, calculating second distance information based on a length of time taken to observe the peak after the laser beam is emitted in the emitting, and integrating the first distance information and the second distance information with each other. The mobile object includes the distance-measuring apparatus.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 26, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: HIROYOSHI SEKIGUCHI, JUN KISHIWADA, SOICHIRO YOKOTA, TADASHI NAKAMURA, SEIYA AMANO, KAZUMA MATSUURA
  • Publication number: 20190299032
    Abstract: An oil-in water emulsion cosmetic composition has a good feeling in use and excellent dispersion stability, and does not cause patchiness upon drying. A hydrophobized powder is dispersed in an oil phase and processed with a wet type disperser to obtain a dispersed solution. A water phase is added thereto and processed with a homomixer, to obtain an oil-in water emulsion composition having excellent usability. The powder is easily dispersed upon application to skin. The dispersion stability of the powder is further improved, and the precipitation and creaming of the emulsion particle can be eliminated by blending a thickener having salt tolerance. A sticky feeling is eliminated by using succinoglycan as a thickener, and patchiness is eliminated by plasticizing said succinoglycan.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Susumu Yoshida, Tadashi Nakamura, Akira Ishikubo, Akio Nasu
  • Patent number: 10429508
    Abstract: A distance measuring device includes a first measurer, a second distance measurer, and circuitry. The first distance measurer measures a distance to a target object; and outputs first distance information indicating a measured distance when the distance measurement is performed under a condition that satisfies a distance measurement condition, but outputs the first distance information indicating a predetermined value when the distance measurement is performed under a condition that does not satisfy the distance measurement condition. The second distance measurer measures a distance to the target object and outputs second distance information indicating the measured distance. When the first distance information indicates the predetermined value and the second distance information satisfies a predetermined condition, the circuitry makes alteration such that the distance measurement condition is relaxed.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: October 1, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tetsuo Yamashita, Satoshi Sawaguchi, Fumiko Sakoh, Soichiro Yokota, Kiichiroh Saitoh, Tadashi Nakamura
  • Publication number: 20190280000
    Abstract: A first alternating stack of first insulating layers and first spacer layers, an inter-tier dielectric layer, a sacrificial memory opening fill structure, and a second alternating stack of second insulating layers and second spacer layers are formed over a substrate. The spacer layers are formed as, or are subsequently replaced with, electrically conductive layers. A concave downward-facing surface of the inter-tier dielectric layer is formed on a convex upper surface of the sacrificial memory opening fill structure. An inter-tier memory opening is provided by forming second-tier memory opening and removing the sacrificial memory opening fill structure. A memory stack structure including a memory film is formed in the inter-tier memory opening. The memory film includes a rounded top surface at the joint between tiers to enhance its reliability.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 12, 2019
    Inventors: Tadashi Nakamura, Kota Funayama
  • Patent number: 10409192
    Abstract: An optical scanner includes a light source including a plurality of light emitting elements, a polygon mirror which deflects light from the light source for scanning a surface of a subject, an optical element arranged between the light source and the polygon mirror, having optical power in a sub scanning direction, a synchronous detector which detects the light deflected by the polygon mirror for synchronous detection and generates a signal for controlling a timing at which the scanning of the surface is started, and a fixing element which secures one end of the optical element. The light emitting elements of the light source are aligned with a certain tilt angle relative to the sub scanning direction. Light from one of the light emitting elements disposed closest to the fixing element in a main scanning direction is used for synchronous detection.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 10, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomoya Fujii, Tadashi Nakamura, Nobuyuki Arai, Yoshinobu Sakaue, Noboru Kusunose, Daisuke Imaki
  • Patent number: 10398006
    Abstract: An object detection apparatus includes a light emission unit including a light source to emit light, a light receiving unit including a light detector to receive light reflected from an object, a signal processing unit including a signal detector to be input with an output signal of the light detector or a signal acquired by processing the output signal of the light detector, and a control unit to set at least one area in a light emission region of the light emission unit as a target area, and to set at least one of a light emission condition of the light emission unit and a processing condition of the signal processing unit such that the at least one of the light emission condition and the processing condition are different between when the light is emitted to the target area and when the light is emitted to a background area.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: August 27, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Tadashi Nakamura
  • Publication number: 20190250270
    Abstract: A distance measuring apparatus includes a light source to emit light beams, an optical scanner to scan the light beams output from the light source over a predetermined range, a light receiver to receive reflected light obtained as a result of the light beams being reflected by a target object, and to output detection signals, and a control circuit to measure a distance to the target object based on the detection signals. The light source including a plurality of light-emitting device groups that are arranged in a scan direction of a scan performed by the optical scanner, and the control circuit being to make the plurality of light-emitting device groups emit light at respective different timings in a single scan, and to measure the distance to the target object based on a sum of the detection signals.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Inventors: Shuichi SUZUKI, Nobunari Tsukamoto, Tsuyoshi Ueno, Tadashi Nakamura, Naoto Jikutani, Kazuma Izumiya, Atsushi Sakai, Masayuki Yanagihashi, Yasufumi Yamada
  • Publication number: 20190242997
    Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Inventors: Kazuhiro AKATSU, Tadashi NAKAMURA, Kohji SAKAI
  • Patent number: 10371817
    Abstract: An object detecting apparatus includes: a light projection unit that is an array light source in which each of a plurality of light emission areas emits light, an optical scanning unit that performs scanning with the light, which is emitted from the light projection unit, in a first direction, and a light receiving unit that receives reflected light which is the light, with which the scanning is performed, being reflected by an object, and an object information acquiring unit that detects presence/absence of the object based on emission timing at which the light is emitted from the light projection unit and light receiving timing at which the light receiving unit receives the reflected light.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: August 6, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kohji Sakai, Tadashi Nakamura
  • Patent number: 10302767
    Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: May 28, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
  • Publication number: 20190151911
    Abstract: The present invention relates to a method and apparatus for producing a product by hydrolyzing a raw material containing vegetable waste comprising, a hydrolysis treatment step of subjecting the raw material to a hydrolysis treatment with steam by a hydrolysis treatment apparatus, a washing step of washing the hydrolyzed raw material with a washing liquid by a cleaning apparatus, and a solid-liquid separation step of separating the washed raw material into a solid component and a liquid component by a solid-liquid separation apparatus, wherein at least one of the solid content or the liquid con-tent is used as the product.
    Type: Application
    Filed: June 27, 2016
    Publication date: May 23, 2019
    Inventors: Mamoru KIMURA, Kentaro NAGASAWA, Tadashi NAKAMURA
  • Publication number: 20190150160
    Abstract: A base station device is implemented on a general purpose server by using software and includes a memory and a processor coupled to the memory. The processor executes a process including: collecting information indicating usage states of resources in the general purpose server; deciding, based on the collected information, combinations of uplink data rates and downlink data rates that are feasible in free space in the resources in the general purpose server; and adjusting communication with user equipment so as not to exceed a combination of an uplink data rate and a downlink data rate out of the combinations of the uplink data rates and the downlink data rates.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 16, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Noboru KOBAYASHI, Tadashi Nakamura
  • Patent number: 10266628
    Abstract: A nitrile copolymer rubber composition including a nitrile copolymer rubber (A) containing 35 to 80 wt % of ?,?-ethylenically unsaturated nitrile monomer units (a1), 19.5 to 64.5 wt % of conjugated diene monomer units (a2), and 0.5 to 20 wt % of ?,?-ethylenically unsaturated carboxylic acid monomer units (a3) and an inorganic filler (B) with an aspect ratio of 30 to 2,000, wherein a content of the inorganic filler (B) with respect to 100 parts by weight of the nitrile copolymer rubber (A) is 1 to 200 parts by weight is provided.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 23, 2019
    Assignee: ZEON CORPORATION
    Inventors: Akira Tsukada, Tadashi Nakamura
  • Patent number: 10261315
    Abstract: An optical scanning apparatus includes a light source to emit light, a light deflector having a reflection face to deflect the light as a scan-use light to scan an image generation element by oscillating the reflection face, a light receiving element to receive a control-use light to generate a signal used for controlling a scanning condition of the scan-use light, and a control unit to control the scanning condition of the light deflector based on the generated signal.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: April 16, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Miyatake, Naoki Nakamura, Tadashi Nakamura
  • Patent number: 10242994
    Abstract: A monolithic three-dimensional memory device includes a first alternating stack of first insulating layers and first electrically conductive layers located over a top surface of a substrate, an insulating cap layer overlying the first alternating stack, a second alternating stack of second insulating layers and second electrically conductive layers and overlying the insulating cap layer, memory openings extending through the second alternating stack, the insulating cap layer, and the first alternating stack, memory stack structures located within the memory openings, and annular spacers located within the insulating cap layer and laterally surrounding a respective one of the memory stack structures.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 26, 2019
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Takashi Inomata, Nobuo Hironaga, Junichi Ariyoshi, Tadashi Nakamura
  • Publication number: 20190056496
    Abstract: First and second types of object detectors, a sensing device, and a mobile apparatus. The first and second types of object detectors include a light source configured to emit light, photoreceptor configured to receive the light reflected by an object, and a binarizing circuit configured to binarize a signal sent from the photoreceptor at a threshold Vth. In the first and second types of object detectors, object detection processes are performed in a same direction until a high-level signal is output M times from the signal binarized by the binarizing circuit. In the first type of object detector, a value of the M is determined based on an incidence of shot noise where peak intensity exceeds the threshold Vth in the photoreceptor. In the second type of object detector, a threshold Vth is set based on a value of the M.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 21, 2019
    Inventors: Kohji SAKAI, Toshishige FUJII, Tadashi NAKAMURA, Takeshi UEDA, Kohei USHIO, Yuuta YOSHINO
  • Publication number: 20190012206
    Abstract: An information processing apparatus configured to execute a wireless communication with a terminal device, the information processing apparatus includes a memory, a first processor coupled to the memory and configured to execute an calculation processing for the wireless communication, and a second processor configured to obtain schedule information indicating schedule of the wireless communication, identify, based on the schedule information, an amount of calculation resource to be used for the calculation processing, and allocate, based on the schedule information, the identified amount of the calculation resource to the calculation processing for the wireless communication with the terminal device.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 10, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Noboru KOBAYASHI, Tadashi Nakamura
  • Patent number: 10148064
    Abstract: A semiconductor laser driving apparatus for driving a semiconductor laser serving as a light source for optical scanning, the semiconductor laser driving apparatus includes: first and second switching elements that are each capable of switching energization of the semiconductor laser ON/OFF; a first pulse generation unit that intermittently outputs first driving pulses to the first switching element in a first time slot; and a second pulse generation unit that outputs a second driving pulse to the second switching element in a second time slot different from the first time slot.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 4, 2018
    Assignee: RICOH COMPANY, LTD
    Inventors: Kohji Sakai, Masataka Uehira, Shigeaki Imai, Tadashi Nakamura