Patents by Inventor Souhei Abe

Souhei Abe 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: 12044919
    Abstract: A light control sheet includes a first characteristic and a second characteristic selectively exhibited. In the first characteristic, an absolute value of a change in clarity per unit voltage is greater than an absolute value of a change in haze per unit voltage. In the second characteristic, an absolute value of a change in haze per unit voltage is equal to or greater than an absolute value of a change in clarity per unit voltage. Haze is calculated in accordance with JIS K 7136:2000. Clarity is calculated by 100×(LC?LR)/(LC+LR). LC is an intensity of straight light travelling straight along a travelling direction of parallel light that has entered the light control sheet, and LR is an intensity of narrow-angle scattered light having an angle within ±2.5° relative to the travelling direction of the parallel light.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: July 23, 2024
    Assignee: TOPPAN Inc.
    Inventor: Souhei Abe
  • Patent number: 11640078
    Abstract: A driver circuit applies a voltage such that clarity of a light control sheet is 83% or less to bring the light control sheet into a first state, and applies a voltage such that haze of the light control sheet according to JIS K 7136 is 15% or less to bring the light control sheet into a second state. The clarity is calculated from the following Formula (1): 100×(LC?LR)/(LC+LR) . . . (1) where LC is an intensity of straight light traveling straight along a traveling direction of parallel light entering the light control sheet, and LR is an intensity of narrow-angle scattered light having an angle within ±2.5° relative to the traveling direction of the parallel light, in light that has passed through the light control sheet.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: May 2, 2023
    Assignee: TOPPAN Inc.
    Inventors: Norihiko Kaneko, Souhei Abe
  • Publication number: 20220299804
    Abstract: A driver circuit applies a voltage such that clarity of a light control sheet is 83% or less to bring the light control sheet into a first state, and applies a voltage such that haze of the light control sheet according to JIS K 7136 is 15% or less to bring the light control sheet into a second state. The clarity is calculated from the following Formula (1): 100×(LC?LR)/(LC+LR) . . . (1) where LC is an intensity of straight light traveling straight along a traveling direction of parallel light entering the light control sheet, and LR is an intensity of narrow-angle scattered light having an angle within ±2.5° relative to the traveling direction of the parallel light, in light that has passed through the light control sheet.
    Type: Application
    Filed: April 26, 2022
    Publication date: September 22, 2022
    Applicant: TOPPAN Inc.
    Inventors: Norihiko KANEKO, Souhei ABE
  • Publication number: 20220252929
    Abstract: A light control sheet includes a first characteristic and a second characteristic selectively exhibited. In the first characteristic, an absolute value of a change in clarity per unit voltage is greater than an absolute value of a change in haze per unit voltage. In the second characteristic, an absolute value of a change in haze per unit voltage is equal to or greater than an absolute value of a change in clarity per unit voltage. Haze is calculated in accordance with JIS K 7136:2000. Clarity is calculated by 100×(LC?LR)/(LC+LR). LC is an intensity of straight light travelling straight along a travelling direction of parallel light that has entered the light control sheet, and LR is an intensity of narrow-angle scattered light having an angle within ±2.5° relative to the travelling direction of the parallel light.
    Type: Application
    Filed: April 26, 2022
    Publication date: August 11, 2022
    Applicant: TOPPAN Inc.
    Inventor: Souhei ABE
  • Patent number: 5090258
    Abstract: A multipipe flow-dividing dilution tunnel system divides a gas to be inspected, such as an automobile exhaust gas, at a predetermined division ratio, dilutes a divided gas with a dilution gas, and samples and tests the diluted gas for particulate materials and other constituents. The gas to be inspected is introduced into a multipipe flow divider having a plurality of flow-dividing pipes, one of which extends as an inlet pipe into a dilution tunnel. The gas is divided by the inlet pipe and introduced therethrough into the dilution tunnel. A plurality of division ratio control nozzles are disposed in the dilution tunnel immediately downstream of the outlet of the inlet pipe for ejecting for ejecting a pressurized dilution gas toward a position downstream of the outlet of the inlet pipe.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: February 25, 1992
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Akira Yamasaki, Yoshinaka Takeda, Souhei Abe, Izumi Fukano