Patents by Inventor Keisuke Mameda

Keisuke Mameda 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).

  • Curable heat radiation composition
    Patent number: 10717896
    Abstract: The present invention relates to a curable heat radiation composition which includes two types of fillers with different compressive breaking strengths (except when the two types of fillers are the same substance) and a thermosetting resin, the compressive breaking strength ratio of the two types of fillers [compressive breaking strength of a filler (A) with a higher compressive breaking strength/compressive breaking strength of a filler (B) with a lower compressive breaking strength] being 5 to 1,500, the compressive breaking strength of the filler (A) being 100 to 1,500 MPa, and the compressive breaking strength of the filler (B) being 1.0 to 20 MPa, an adhesive sheet using the composition and a method for producing the same. An aluminum nitride is preferable as the filler (A) and hexagonal boron nitride agglomerated particles are preferable as the filler (B).
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 21, 2020
    Assignee: SHOWA DENKO K.K.
    Inventors: Yoichiro Sakaguchi, Kentarou Takahashi, Keisuke Mameda
  • CURABLE HEAT RADIATION COMPOSITION
    Publication number: 20170283645
    Abstract: The present invention relates to a curable heat radiation composition which includes two types of fillers with different compressive breaking strengths (except when the two types of fillers are the same substance) and a thermosetting resin, the compressive breaking strength ratio of the two types of fillers [compressive breaking strength of a filler (A) with a higher compressive breaking strength/compressive breaking strength of a filler (B) with a lower compressive breaking strength] being 5 to 1,500, the compressive breaking strength of the filler (A) being 100 to 1,500 MPa, and the compressive breaking strength of the filler (B) being 1.0 to 20 MPa, an adhesive sheet using the composition and a method for producing the same. An aluminum nitride is preferable as the filler (A) and hexagonal boron nitride agglomerated particles are preferable as the filler (B).
    Type: Application
    Filed: June 20, 2017
    Publication date: October 5, 2017
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoichiro SAKAGUCHI, Kentarou TAKAHASHI, Keisuke MAMEDA
  • CURABLE HEAT RADIATION COMPOSITION
    Publication number: 20150037575
    Abstract: The present invention relates to a curable heat radiation composition which includes two types of fillers with different compressive breaking strengths (except when the two types of fillers are the same substance) and a thermosetting resin, the compressive breaking strength ratio of the two types of fillers [compressive breaking strength of a filler (A) with a higher compressive breaking strength/compressive breaking strength of a filler (B) with a lower compressive breaking strength] being 5 to 1,500, the compressive breaking strength of the filler (A) being 100 to 1,500 MPa, and the compressive breaking strength of the filler (B) being 1.0 to 20 MPa, an adhesive sheet using the composition and a method for producing the same. An aluminum nitride is preferable as the filler (A) and hexagonal boron nitride agglomerated particles are preferable as the filler (B).
    Type: Application
    Filed: February 21, 2013
    Publication date: February 5, 2015
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoichiro Sakaguchi, Kentarou Takahashi, Keisuke Mameda