Patents by Inventor Hiroki Hagiwara

Hiroki Hagiwara 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: 20240263004
    Abstract: Provided are a resin composition for encapsulation that is superior in high-temperature reverse bias test (HTRB test) reliability; and a semiconductor device. The resin composition for encapsulation is used to encapsulate a power semiconductor element made of Si, SiC, GaN, Ga2O3 or diamond, and a cured product of the resin composition for encapsulation has a dielectric tangent of not larger than 0.50 when measured at 150° C. and 0.1 Hz. The semiconductor device is such that a power semiconductor element made of Si, SiC, GaN, Ga2O3 or diamond is encapsulated by the cured product of the resin composition for encapsulation.
    Type: Application
    Filed: April 10, 2024
    Publication date: August 8, 2024
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Shoichi OSADA, Norifumi KAWAMURA, Hiroki HORIGOME, Kenji HAGIWARA, Ryuhei YOKOTA
  • Patent number: 11807475
    Abstract: There is provided a loading support system including a container selection unit configured to select a container, which is suitable for a shape of a load to be loaded on a cargo bed of a collection and delivery vehicle, from a plurality of standardized containers having different shapes, and a loading location determination unit configured to determine a loading location of the container, which is selected by the container selection unit, in the cargo bed.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: November 7, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Ohtsuka, Atsushi Sajiki, Yukio Umemura, Takashi Nanbu, Hiroki Tabata, Hiroki Hagiwara, Takeshi Saotome
  • Publication number: 20230331000
    Abstract: A printing method involves applying a processing fluid containing a multivalent metal salt to a print medium, to form a processing fluid layer; applying a white ink containing a white coloring material and water to form a white ink layer; and applying a non-white ink containing a non-white coloring material and water to the white ink layer, after securing a time interval of 0.5 seconds or longer after the white ink is applied without drying with a drying unit after the white ink is applied. 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, where the Cobb water absorption is stipulated by JIS-P8140.
    Type: Application
    Filed: August 20, 2021
    Publication date: October 19, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Sei Yamamoto, Tomohiro Nakagawa, Kazuhiko Umemura, Yuya Hirokawa, Hiroki Hagiwara, Takuya Saiga
  • Publication number: 20230220226
    Abstract: An ink set includes a non-white ink and a white ink. The non-white ink contains water, a coloring material, an organic solvent, and an acetylene glycol compound. The white ink contains water, a coloring material, an organic solvent, and a compound represented by General formula (1) below where R represents a hydrogen atom or a methyl group, n1 and n2 represent integers of from 1 through 7, k represents an integer of from 0 through 5, and m represents an integer of from 1 through 20.
    Type: Application
    Filed: April 27, 2021
    Publication date: July 13, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroki HAGIWARA, Tomohiro Nakagawa, Kazuhiko Umemura, Masayuki Koyano, Sei Yamamoto, Yuya Hirokawa, Takuya Saiga
  • Publication number: 20230150169
    Abstract: A three-dimensional shaped object producing method is provided that includes: forming a layer from secondary particles (51) including a binder resin and primary particles containing at least a ceramic material; and applying a liquid that dissolves the binder resin on the formed layer. The liquid contains a solvent having a boiling point of 100° C. or higher and 210° C. or lower, a relative energy difference (RED) between the binder resin and the solvent is 1.0 or less, and the secondary particles (51) have a loose bulk density of 25% or higher and 55% or lower.
    Type: Application
    Filed: November 9, 2022
    Publication date: May 18, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Kiichi Kamoda, Hiroki Hagiwara
  • Patent number: 11649364
    Abstract: An ink is provided. The ink comprises a colorant, water, an organic solvent comprising a glycol ether having a solubility parameter of from 9.0 to 12.0 (cal/cm3)1/2, and a surfactant comprising a silicone-based surfactant (a) and a nonionic surfactant (b).
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: May 16, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroki Hagiwara, Tomohiro Nakagawa, Yuki Kaji
  • Publication number: 20230051878
    Abstract: Provided is an image printing method including a first processing fluid applying step of applying a first processing fluid containing a multivalent metal salt to a predetermined region of a print medium, and a second processing fluid applying step of applying a second processing fluid containing a resin emulsion containing an anionic functional group to the predetermined region of the print medium to which the first processing fluid is applied and any other region of the print medium to which the first processing fluid is not applied.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 16, 2023
    Inventors: Sei YAMAMOTO, Kazuhiko UMEMURA, Yuya HIROKAWA, Hiroki HAGIWARA, Takuya SAIGA, Risa TAMURA
  • Patent number: 11578220
    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: Grant
    Filed: March 11, 2021
    Date of Patent: February 14, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomohiro Nakagawa, Hiroki Hagiwara, Yuutaroh Nonaka, Yuusuke Fujita, Kazuhiko Umemura, Sei Yamamoto
  • Patent number: 11548294
    Abstract: A method of printing includes applying a processing fluid to a substrate and inkjet discharging a white ink to the substrate onto which the processing fluid has been applied, wherein the processing fluid contains a tri-valent metal salt, a nonionic urethane resin, and water and the white ink contains a white pigment, a resin, and water.
    Type: Grant
    Filed: October 10, 2021
    Date of Patent: January 10, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takuya Saiga, Sei Yamamoto, Kazuhiko Umemura, Yuya Hirokawa, Hiroki Hagiwara
  • 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
  • Publication number: 20220118774
    Abstract: A method of printing includes applying a processing fluid to a substrate and inkjet discharging a white ink to the substrate onto which the processing fluid has been applied, wherein the processing fluid contains a tri-valent metal salt, a nonionic urethane resin, and water and the white ink contains a white pigment, a resin, and water.
    Type: Application
    Filed: October 10, 2021
    Publication date: April 21, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Takuya SAIGA, Sei Yamamoto, Kazuhiko Umemura, Yuya Hirokawa, Hiroki Hagiwara
  • Publication number: 20220102411
    Abstract: An imaging device includes: a semiconductor substrate having a first surface and a second surface opposed to each other, and provided with a plurality of pixels; a wiring layer which is provided on side of the second surface of the semiconductor substrate and to which a signal is to be transmitted for each of the plurality of pixels; a light-blocking film opposed to the wiring layer with the semiconductor substrate interposed therebetween and having an opening satisfying Expression (1) below for each of the pixels; and a waveguide provided on side of the first surface of the semiconductor substrate for each of the plurality of pixels and extending to the opening of the light-blocking film. B < A ( 1 ) where B is an area of the opening in each pixel, and A is an area of the first surface covered with the light-blocking film in each pixel.
    Type: Application
    Filed: January 23, 2020
    Publication date: March 31, 2022
    Inventors: Sozo Yokogawa, Hiroki Hagiwara
  • Patent number: 11276920
    Abstract: Provided is an antenna structure that can be attached with ease and is likely to blend into environments. An antenna structure 1 includes: plural antenna elements 10 configured individually and arranged discretely; and a base 60 which adheres to at least side surfaces of the antenna elements 10, in which the plural antenna elements 10 are embedded and fixed, and which forms a plate-like outer shape.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 15, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Tomoyuki Soga, Akira Maruyama, Hiroki Hagiwara, Akihiko Yazaki, Takaya Yamauchi, Shingo Moriyasu
  • 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
  • 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
  • Patent number: 11145969
    Abstract: An antenna structure as an example of a structure including a transparent conductor includes: an antenna as an example of the transparent conductor; a film transmitting a visible light; a positioning structure configured to position the film from an invisible side of a ceiling as an example of a facility; and a flange transmitting the visible light and configured to position the film from a visible side of the ceiling and including a lens part at a position facing the positioning structure.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: October 12, 2021
    Assignee: NIHON DENGYO KOSAKU CO., LTD.
    Inventors: Akira Maruyama, Yukio Sato, Hiroki Hagiwara
  • 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: 11101555
    Abstract: The antenna structure as an example of a structure including a mesh-like transparent conductor includes: a film made of an electrical insulating material transmitting visible light; a surface section provided on one face of the film, made of a mesh-like conductive material, and having a predetermined shape; and a bordering section provided on the one face of the film and configured to border at least a part of edges of the surface section ? with a conductive material.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: August 24, 2021
    Assignee: NIHON DENGYO KOSAKU CO., LTD.
    Inventors: Hiroki Hagiwara, Akira Maruyama