Patents by Inventor Makiko Takagi

Makiko Takagi 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: 20130113034
    Abstract: A non-volatile semiconductor memory device comprises a tunnel insulating film on a semiconductor substrate, a charge storage film on the tunnel insulating film, a blocking insulating film on the charge storage film, a control gate electrode arranged on the blocking insulating film, and source/drain regions formed on the semiconductor substrate on the both sides of the control gate electrode, that the charge storage film is a silicon nitride film produced according to the catalytic chemical vapor deposition technique and that the ratio between the constituent elements: N/Si falls within the range of from 1.2 to 1.4.
    Type: Application
    Filed: July 28, 2011
    Publication date: May 9, 2013
    Applicants: ULVAC, INC., TOKAI UNIVERSITY EDUCATIONAL SYSTEM
    Inventors: Hideaki Zama, Makiko Takagi, Kiyoteru Kobayashi, Hiroaki Watanabe, Yu Takahara
  • Publication number: 20100330363
    Abstract: A resin substrate of the present invention has a resin layer and a surface layer formed on a surface of the resin layer, wherein the surface layer is a layer comprising silicon nitride as a main component and deposited by the chemical vapor deposition method, and at the interface between the resin layer and the surface layer, at the interface between the resin layer and the surface layer, an interfacial region over which a percentage changes from 80% to 20% has a thickness of not more than 25 nm, wherein the difference between the maximum nitrogen concentration in the surface layer and the steady-state nitrogen concentration in the resin layer is taken as 100%. The surface layer has an average surface roughness (Ra) of not more than 1 nm. The resin substrate has properties of water vapor barrier and surface flatness.
    Type: Application
    Filed: June 27, 2008
    Publication date: December 30, 2010
    Applicants: ULVAC, INC., UBE INDUSTRIES, LTD.
    Inventors: Tetsushi Fujinaga, Makiko Takagi, Masanori Hashimoto, Shin Asari, Ryuji Oyama
  • Publication number: 20090277386
    Abstract: A catalytic chemical vapor deposition apparatus is provided for producing a thin film of desired film quality, by making a particle countermeasure against the release gas such as H2O and deposit materials from or on members composing the structure of the inside of the processing chamber and the inner wall of the processing chamber.
    Type: Application
    Filed: April 9, 2007
    Publication date: November 12, 2009
    Applicant: ULVAC, Inc.
    Inventors: Makiko Takagi, Hiromi Itoh, Kazuya Saito, Hideki Fujimoto