Patents by Inventor Daisuke Takagi

Daisuke Takagi 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: 11097544
    Abstract: Provided is a liquid discharging head including: a membranous member including a discharging port through which a liquid is discharged; and a displacement member disposed at membranous member's one side at which the liquid to be discharged through the discharging port is provided and configured to displace a position of the membranous member to cause the liquid to be discharged through the discharging port.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: August 24, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Koichi Muramatsu, Takahiko Matsumoto, Shinnosuke Koshizuka, Satoshi Okano, Satoshi Nakazawa, Yuzuru Kuramochi, Ryuya Mashiko, Takeshi Akai, Daisuke Takagi, Tomoaki Nakayama, Hidekazu Yaginuma, Hiroshi Fujie, Manabu Yamanaka
  • Patent number: 11007774
    Abstract: A droplet forming device is provided. The droplet forming device includes a liquid holder configured to hold a liquid, a film having a discharge hole, two or more vibration generators configured to vibrate the film, and a driver configured to apply a driving signal to the vibration generators. One or more of the vibration generators are disposed in each region on the film where a polarity of bending moment differs.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: May 18, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuzuru Kuramochi, Daisuke Takagi, Satoshi Okano, Takahiko Matsumoto, Koichi Muramatsu, Satoshi Nakazawa, Ryuya Mashiko, Manabu Seo, Hidekazu Yaginuma, Mayuko Murano
  • Patent number: 11001072
    Abstract: Liquid discharge head comprising: liquid discharge unit, which includes discharge port, liquid retaining section configured to retain liquid to be discharged from the discharge port, and displacement section configured to discharge the liquid retained within the liquid retaining section from the discharge port; a pair of liquid storage sections, which are configured to store the liquid and are each connected to the liquid retaining section in the liquid discharge unit so that the liquid can flow; a pair of liquid feeding sections that are connected to the pair of liquid storage sections and are configured to feed the liquid between the liquid storage section and the liquid retaining section; and a pair of open and close sections that are each disposed at flow path between the liquid feeding section and the liquid storage section and are configured to open and close the flow path.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: May 11, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Manabu Yamanaka, Daisuke Takagi, Shinnosuke Koshizuka, Hiroshi Fujie, Takeshi Akai, Yu Yamaya, Youhei Niitsuma
  • Patent number: 10807372
    Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 20, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Akai, Hiroshi Fujie, Keisuke Sugiyama, Daisuke Takagi, Hiroki Somada, Manabu Yamanaka
  • Publication number: 20200324269
    Abstract: Provided are a water-absorbing resin having more excellent balance of fluid retention capacity, liquid permeability, and low dustiness and a novel measurement method which enables evaluation of excellent physical properties of the water-absorbing resin. A method for measuring an absorption speed of a particulate water-absorbing agent is a method including the step of applying pressure to a portion of a bottom surface of a measurement container (51) by use of a flat plate (52) in a state in which part or whole of the particulate water-absorbing agent (56) is fixed on the bottom surface of the measurement container (51), the bottom surface being surrounded by a frame, introducing an aqueous solution through a liquid injection inlet (54) with which the flat plate (52) is equipped, and then measuring the amount of time elapsed until an end of absorption of the introduced aqueous solution by the particulate water-absorbing agent (56).
    Type: Application
    Filed: October 12, 2018
    Publication date: October 15, 2020
    Inventors: Kazushi TORII, Yuika NODA, Daisuke TAKAGI
  • Publication number: 20200298374
    Abstract: A grinding material includes a base sheet and a grinding layer overlaid on a front face side of the base sheet and including abrasive grains and a binder for the abrasive grains. The grinding layer includes the abrasive grains of a plurality of types. Of the abrasive grains of the plurality of types, provided that first abrasive grains have the largest average diameter and second abrasive grains have the second largest average diameter, the percentage of the average diameter of the second abrasive grains with respect to that of the first abrasive grains is 5-70%. The total content of the abrasive grains in the grinding layer is preferably 50-85% by volume. The content of the first abrasive grains in the grinding layer is preferably 1-25% by volume. The first abrasive grains are preferably diamond abrasive grains and the second abrasive grains are preferably alumina abrasive grains.
    Type: Application
    Filed: January 19, 2017
    Publication date: September 24, 2020
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Daisuke TAKAGI, Tomoki IWANAGA, Kazuo SAITO, Toshikazu TAURA
  • Patent number: 10732087
    Abstract: A liquid droplet forming device includes a liquid droplet discharger that discharges, as a liquid droplet, a particle suspension liquid in which one or more fluorescent particles are suspended; a light source for irradiating light onto the flying liquid droplet discharged from the liquid droplet discharger; a photodetector that receives fluorescence that is emitted by the one or more fluorescent particles included in the liquid droplet in response to the light as excitation light; and a particle number detector that detects a number of the one or more fluorescent particles included in the liquid droplet based on information from the photodetector.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: August 4, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takahiko Matsumoto, Manabu Seo, Daisuke Takagi
  • Publication number: 20200239738
    Abstract: The present invention provides an optically clear adhesive sheet that has excellent flexibility and prevents delay bubbles in high temperature and high humidity environments. The optically clear adhesive sheet of the present invention sequentially includes a first surface-adhesive layer, an intermediate adhesive layer, and a second surface-adhesive layer. The first surface-adhesive layer and the second surface-adhesive layer each have a higher storage elastic modulus at 85° C. than the intermediate adhesive layer. The first surface-adhesive layer and the second surface-adhesive layer each have a storage elastic modulus at 85° C. of 3.0×104 Pa or higher and 30.0×104 Pa or lower. The intermediate adhesive layer has a storage elastic modulus at 85° C. of 1.0×104 Pa or higher and 15.0×104 Pa or lower. The intermediate adhesive layer contains polyurethane.
    Type: Application
    Filed: July 11, 2018
    Publication date: July 30, 2020
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Hiroki NAITO, Daisuke TAKAGI
  • Publication number: 20200224068
    Abstract: The present invention provides an optically clear adhesive sheet preventing whitening and delay bubbles during storage in a high-humidity environment using a heat-cured polyurethane that has excellent flexibility and is capable of giving a thick film. The optically clear adhesive sheet of the present invention contains a heat-cured polyurethane, the heat-cured polyurethane being a cured product of a thermosetting polyurethane composition containing a polyol component and a polyisocyanate component, the polyisocyanate component containing both a polyisocyanate having a hydrophilic unit and a polyisocyanate having no hydrophilic unit, the optically clear adhesive sheet showing a moisture absorption coefficient of 3600 ppm or lower after being subjected to a test in which the sheet is left in a high-temperature, high-humidity environment with a temperature of 85° C. and a humidity of 85% for three hours.
    Type: Application
    Filed: December 11, 2017
    Publication date: July 16, 2020
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Daisuke TAKAGI, Hiroki NAITO, Yuki HOSOKAWA
  • Publication number: 20200207112
    Abstract: Liquid discharge head comprising: liquid discharge unit, which includes discharge port, liquid retaining section configured to retain liquid to be discharged from the discharge port, and displacement section configured to discharge the liquid retained within the liquid retaining section from the discharge port; a pair of liquid storage sections, which are configured to store the liquid and are each connected to the liquid retaining section in the liquid discharge unit so that the liquid can flow; a pair of liquid feeding sections that are connected to the pair of liquid storage sections and are configured to feed the liquid between the liquid storage section and the liquid retaining section; and a pair of open and close sections that are each disposed at flow path between the liquid feeding section and the liquid storage section and are configured to open and close the flow path.
    Type: Application
    Filed: November 12, 2019
    Publication date: July 2, 2020
    Inventors: Manabu YAMANAKA, Daisuke TAKAGI, Shinnosuke KOSHIZUKA, Hiroshi FUJIE, Takeshi AKAI, Yu YAMAYA, Youhei NIITSUMA
  • Patent number: 10646873
    Abstract: A multi-well plate lid includes a well-side surface to cover a plurality of wells of a multi-well plate. The well-side surface includes two or more regions with different adhesive strengths to the multi-well plate.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 12, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroki Somada, Satoshi Izumi, Takahiko Matsumoto, Daisuke Takagi
  • Patent number: 10647111
    Abstract: Provided is a liquid droplet forming device including: a liquid container capable of containing a liquid; a membranous member disposed at a bottom of the liquid container and including a discharging hole; a deforming unit capable of deforming the membranous member; and a driving unit configured to drive the deforming unit by outputting a discharging signal for deforming the membranous member to discharge the liquid or a suppressing signal for suppressing residual vibration of the membranous member, wherein the suppressing signal is a signal based on natural vibration period T0 of the membranous member, wherein an amplitude of the suppressing signal is lower than or equal to an amplitude of the discharging signal, and wherein interval time Ti from when outputting of the discharging signal is ended until when outputting of the suppressing signal is started satisfies a formula: Ti=(m?½)×T0, where m represents a positive integer.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: May 12, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuzuru Kuramochi, Daisuke Takagi, Satoshi Okano, Takahiko Matsumoto, Koichi Muramatsu, Satoshi Nakazawa, Ryuya Mashiko
  • Publication number: 20200139704
    Abstract: Provided is a liquid discharging head including: a membranous member including a discharging port through which a liquid is discharged; and a displacement member disposed at membranous member's one side at which the liquid to be discharged through the discharging port is provided and configured to displace a position of the membranous member to cause the liquid to be discharged through the discharging port.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 7, 2020
    Inventors: Koichi Muramatsu, Takahiko Matsumoto, Shinnosuke Koshizuka, Satoshi Okano, Satoshi Nakazawa, Yuzuru Kuramochi, Ryuya Mashiko, Takeshi Akai, Daisuke Takagi, Tomoaki Nakayama, Hidekazu Yaginuma, Hiroshi Fujie, Manabu Yamanaka
  • Patent number: 10605716
    Abstract: A particle counting apparatus is provided that includes: a droplet discharger configured to discharge a droplet containing at least one luminescent particle capable of emitting light upon receiving light; a light irradiator configured to irradiate the droplet discharged by the droplet discharger with light; at least one light receiver configured to receive light emitted by the at least one luminescent particle irradiated with the light emitted by the light irradiator; and circuitry configured to count luminescent particles contained in the droplet based on the light received by the at least one light receiver, the circuitry being configured to measure a presence or absence of the luminescent particles contained in the droplet; and to measure a number of the luminescent particles contained in the droplet.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: March 31, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Ikuo Katoh, Manabu Seo, Yunong Ji, Nobuaki Toyoshima, Hiroki Somada, Ryuya Mashiko, Satoshi Izumi, Takahiko Matsumoto, Daisuke Takagi
  • Publication number: 20200072859
    Abstract: An olfaction test device (1) causes air flowing into an inflow path (120) by use of a compressor (121) to have a constant flow velocity and a constant flow rate by passing the air through a sonic nozzle (124). The air is caused to pass through an opened one of inflow valves (126 to 129) disposed in branches of the inflow path (120) and to flow into any one of sample containers (101 to 104), whereby gases with different smell intensities are generated. The gases are then warmed by a heater (153) disposed in an outflow path (150) and released in a nose mask (155).
    Type: Application
    Filed: February 26, 2018
    Publication date: March 5, 2020
    Inventors: Daisuke Takagi, Tatsu Kobayakawa, Takuma Nihira
  • Publication number: 20200070148
    Abstract: Provided is a container (10) including a base material (1) including a plurality of concave portions (2); a recognition unit (3) disposed on the base material and configured to recognize the base material; and a storage unit (4) disposed in a position other than a measurement region of the base material and configured to store information on biomaterials contained in the plurality of concave portions, wherein the recognition unit and the storage unit are allowed to correspond to each other.
    Type: Application
    Filed: December 7, 2017
    Publication date: March 5, 2020
    Inventors: Ryuya MASHIKO, Satoshi IZUMI, Hiroki SOMADA, Takahiko MATSUMOTO, Daisuke TAKAGI
  • Patent number: 10562006
    Abstract: The purpose of the present invention is to provide a particulate water absorbing agent having both a high water absorption multiplying factor and a high water absorption rate and a method for manufacturing the same. The present invention is a particulate water absorbing agent for which CRC is 30 to 50 g/g, wherein the weight average particulate diameter (D50) is 200-600 ?m, and the DRC index given by the following formula is a specific value (for example, 43, 30, or 20) or less: DRC index=(49?DRC5min [g/g])/(D50 [?m]/1000).
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: February 18, 2020
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazushi Torii, Mariko Tamaki, Daisuke Takagi, Yuichiro Horimoto, Taishi Kobayashi, Taku Fujimoto, Takahiro Kitano, Taku Iwamura, Hiroki Kawada, Hiroyuki Goto, Yasuhisa Nakajima, Hiroyuki Ikeuchi
  • Publication number: 20200023328
    Abstract: A droplet forming device is provided. The droplet forming device includes a liquid holder configured to hold a liquid, a film having a discharge hole, two or more vibration generators configured to vibrate the film, and a driver configured to apply a driving signal to the vibration generators. One or more of the vibration generators are disposed in each region on the film where a polarity of bending moment differs.
    Type: Application
    Filed: June 10, 2019
    Publication date: January 23, 2020
    Inventors: Yuzuru KURAMOCHI, Daisuke TAKAGI, Satoshi OKANO, Takahiko MATSUMOTO, Koichi MURAMATSU, Satoshi NAKAZAWA, Ryuya MASHIKO, Manabu SEO, Hidekazu YAGINUMA, Mayuko MURANO
  • Patent number: 10530218
    Abstract: A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a shaft having a lower end fixed to the base portion, and arranged to project upward along the central axis; a circuit board arranged above the base portion; a single annular coil attached to the circuit board, and arranged to have the shaft arranged inside thereof; a bearing portion attached to the shaft to be rotatable with respect to the shaft above the coil; a rotor holder attached to the bearing portion; a magnet portion including a plurality of magnetic poles, and attached to the rotor holder; an eccentric weight attached to the rotor holder; a spacer attached to the shaft between the bearing portion and the coil, and including an upper surface arranged to be in contact with a lower surface of the bearing portion; and a cover portion arranged to cover, at least in part, upper and lateral sides of the rotor holder and the eccentric weight, and fixed to an upper end of the shaf
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: January 7, 2020
    Assignee: NIDEC SEIMITSU CORPORATION
    Inventor: Daisuke Takagi
  • Publication number: 20190381500
    Abstract: Provided is a cell contained container including at least two concaves, wherein the concaves contain cells, wherein a number of kinds of the cells is at least two with respect to the cell contained container, and wherein a shortest distance between centers of most closely adjacent two concaves of the at least two concaves is 9.0 mm or less. In a preferable mode, the concaves contain a liquid, and a total liquid amount of the liquid with respect to the concaves is 10.0 microliters or less. In a more preferable mode, a filling accuracy in terms of a number in which the cells are contained in the concaves is 30% or lower.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 19, 2019
    Inventors: Daisuke TAKAGI, Waka Lin, Takahiko Matsumoto, Manabu Seo, Tomoyuki Aratani, Takeru Suzuki, Hidekazu Yaginuma, Satoru Nagasawa, Shinnosuke Koshizuka, Tomoaki Nakayama, Minoru Ko