Patents by Inventor D. Subiantoro

D. Subiantoro 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: 20140121300
    Abstract: The disclosed is a carbon fibrous conjunct in a granule form which comprises carbon fibrous structures and a binder by which the carbon fibrous structures are bound together, wherein mean diameter of the carbon fibrous conjunct is in the range of 0.03 mm-5 mm, and density of the carbon fibrous conjunct is in the range of 0.003-0.5 g/cm3, and wherein each of the carbon fibrous structures comprises carbon fibers each having an outside diameter of 15-100 nm and a carbon granular part with which the carbon fibers are bound in the state that the carbon fibers extend outwardly from the granular part to form a three dimensional network of the carbon fibers, and wherein the granular part and the carbon fibers are bound together by carbon-carbon bonds.
    Type: Application
    Filed: December 4, 2013
    Publication date: May 1, 2014
    Applicant: HODOGAYA CHEMICAL CO., LTD
    Inventors: Koichi HANDA, D. SUBIANTORO, Takayuki TSUKADA, Jiayi SHAN, Tsuyoshi OKUBO
  • Publication number: 20080254296
    Abstract: Carbon fibrous conjunct is provided by adding to carbon fibrous structures, which each comprises a three dimensional network of carbon fibers each having an outside diameter of 15-100 nm, wherein the carbon fibrous structure further comprises a granular part with which the carbon fibers are bound in the state that the carbon fibers extend outwardly from the granular part, a binder for binding the carbon fibrous structures. The fine carbon fibrous structures having such unique configuration and also bearing physical properties suitable for a filler for a composite material can be provided with a good handleability by this carbon fibrous conjunct. Composite material is prepared by adding to the matrix the carbon fibrous conjuncts, at an amount of 0.1 to 30% by weight based on the total weight of the composite material.
    Type: Application
    Filed: February 28, 2006
    Publication date: October 16, 2008
    Applicant: BUSSAN NANOTECH RESEARCH INSTITUTE INC.
    Inventors: Koichi Handa, D. Subiantoro, Takayuki Tsukada, Jiayi Shan, Tsuyoshi Okubo