Patents by Inventor Mayumi MATSUZAKI

Mayumi MATSUZAKI 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: 11988720
    Abstract: A semiconductor device that detects deterioration of a secondary battery is provided. The semiconductor device includes a power gauge, an anomalous current detection circuit, and a control circuit. The power gauge includes a current divider circuit and an integrator circuit. The anomalous current detection circuit includes a first memory, a second memory, and a first comparator. The integrator circuit can convert a detection current detected at the current divider circuit into a detection voltage by integrating the detection current. The anomalous current detection circuit is supplied with the detection voltage, a first signal at a first time, and a second signal at a second time. The first signal can make the detection voltage at the first time be stored in the first memory and the second signal can make the detection voltage at the second time be stored in the second memory.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: May 21, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Takayuki Ikeda, Ryota Tajima, Mayumi Mikami, Yohei Momma, Munehiro Kozuma, Takanori Matsuzaki
  • Publication number: 20230071052
    Abstract: To offer curable silicone compositions with outstandingly high thixotropy, which can form hardened material with an outstanding refractive index transparency. The problem above is solved by curable silicone compositions which include (A) alkenyl group-containing organopolysiloxane which has at least two silicon-bonded alkenyl groups per molecule, (B) organo-hydrogen polysiloxane which has at least two silicon-bonded hydrogen atoms per molecule, (C) silica-titania composite oxide particles at ?3 mass % of the total mass of the composition, and (D) a curing catalyst.
    Type: Application
    Filed: August 26, 2022
    Publication date: March 9, 2023
    Inventors: Shunya TAKEUCHI, Hyunji KANG, Mayumi MATSUZAKI, Kasumi TAKEUCHI
  • Publication number: 20220049121
    Abstract: A curable silicone composition is provided that is exhibits excellent wetting properties on glass substrates and that forms a cured product that has a smooth surface. The curable silicone composition comprises: (A-1) a resinous alkenyl group-containing organopolysiloxane in which aryl groups account for more than 30 mol % of all silicon atom-bonded functional groups; (A-2) a linear alkenyl group-containing organopolysiloxane in which aryl groups account for more than 30 mol % of all silicon atom-bonded functional groups; (B) a linear organopolysiloxane or a cerium-containing organopolysiloxane, in which aryl groups account for no more than 30 mol % of all silicon atom-bonded functional groups, contained in an amount of no more than 2% by mass based on the total mass of all organopolysiloxane components; (C) an organohydrogenpolysiloxane including at least 2 silicon atom-bonded hydrogen atoms per molecule, that is different from component (B); and (D) a catalyst for hydrosilylation reaction.
    Type: Application
    Filed: June 15, 2021
    Publication date: February 17, 2022
    Inventors: Mayumi Matsuzaki, Shunya Takeuchi
  • Publication number: 20200216671
    Abstract: A curable silicone composition is disclosed. The composition comprises: (A) a hydrosilylation-reactive resin-linear block copolymer type organopolysiloxane; (B) an organopolysiloxane resin containing a curing-reactive group having a carbon-carbon double bond in the molecule; (C) an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst. An absolute value (?RI) of a difference between refractive indices of component (A) and component (B) measured at room temperature is less than 0.05. The curable silicone composition generally has excellent handleability, moldability, and mechanical strength (hardness, in particular) and flexibility of a cured product while achieving high transparency. Also disclosed is a resin sheet for an optical member including the composition or cured product thereof, and a light-emitting device or the like including the composition or cured product thereof.
    Type: Application
    Filed: September 21, 2018
    Publication date: July 9, 2020
    Inventors: Mayumi MATSUZAKI, Masaaki AMAKO, Kasumi TAKEUCHI