Patents by Inventor Hirokazu Chiba

Hirokazu Chiba 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: 20220213129
    Abstract: To provide a silicon oxide film which exhibits high gas barrier performance even under a thin film condition. A silicon oxide film characterized by satisfying the following requirements (1) and (2): (1) the water vapor transmission rate (WVTR) at a film thickness of at most 500 nm is at most 9.0×10?3 g/m2·day, (2) the carbon concentration in the film, as measured by X-ray photoelectron spectroscopy (XPS), is at most 3.0 atom %.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 7, 2022
    Inventors: Shun SUGIMOTO, Hirokazu CHIBA, Ryoji TANAKA, Marina FUKAWA
  • Patent number: 9349601
    Abstract: The present invention is to provide a ruthenium complex represented by formula (1a), (2), (3), etc., which is useful for producing a ruthenium-containing thin film both under the conditions using an oxidizing gas as the reaction gas and under the conditions using a reducing gas as the reaction gas: wherein R1a to R7a, R8, R9 and R10 to R18 represents an alkyl group having a carbon number of 1 to 6, etc., and n represents an integer of 0 to 2.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: May 24, 2016
    Assignees: TOSOH CORPORATION, SAGAMI CHEMICAL RESEARCH INSTITUTE
    Inventors: Kenichi Tada, Toshiki Yamamoto, Hiroyuki Oike, Atsushi Maniwa, Hirokazu Chiba, Kohei Iwanaga, Kazuhisa Kawano
  • Publication number: 20150303063
    Abstract: The present invention is to provide a ruthenium complex represented by formula (1a), (2), (3), etc., which is useful for producing a ruthenium-containing thin film both under the conditions using an oxidizing gas as the reaction gas and under the conditions using a reducing gas as the reaction gas: wherein R1a to R7a, R8, R9 and R10 to R18 represents an alkyl group having a carbon number of 1 to 6, etc., and n represents an integer of 0 to 2.
    Type: Application
    Filed: December 6, 2013
    Publication date: October 22, 2015
    Inventors: Kenichi TADA, Toshiki YAMAMOTO, Hiroyuki OIKE, Atsushi MANIWA, Hirokazu CHIBA, Kohei IWANAGA, Kazuhisa KAWANO
  • Patent number: 8779174
    Abstract: A subject for the invention is to provide novel titanium complexes which have a high vapor pressure and high thermal stability and serve as an excellent material for producing a titanium-containing thin film by a technique such as the CVD method or ALD method and to further provide processes for producing these complexes, titanium-containing thin films produced from the complexes, and a process for producing the thin films. The invention relates to producing a titanium complex represented by general formula (1): (wherein R1 and R4 each independently represent an alkyl group having 1-16 carbon atoms; R2 and R3 each independently represent a hydrogen atom or an alkyl group having 1-3 carbon atoms; and R5 represents an alkyl group which has 1-16 carbon atoms and may have been substituted with one or more fluorine atoms) and to producing a titanium-containing thin film using the complex.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: July 15, 2014
    Assignees: Tosoh Corporation, Sagami Chemical Research Institute
    Inventors: Ken-ichi Tada, Toshiki Yamamoto, Hirokazu Chiba, Kohei Iwanaga, Atsushi Maniwa, Tadahiro Yotsuya, Noriaki Oshima
  • Patent number: 8748644
    Abstract: This invention aims at providing (2,4-dimethylpentadienyl)-(ethylcyclopentadienyl)ruthenium which may contain its related structure compound, from which a ruthenium-containing thin film can be produced; a method of producing the same; a method of producing the ruthenium-containing thin film using the same; the ruthenium-containing thin film; and the like. The invention relates to producing the thin film using, as a precursor, (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium containing the related structure compound in an amount not more than 5% by weight, which can be obtained by separating the related structure compound from (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium containing the related structure compound.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: June 10, 2014
    Assignee: Tosoh Corporation
    Inventors: Taishi Furukawa, Noriaki Oshima, Kazuhisa Kawano, Hirokazu Chiba
  • Patent number: 8742153
    Abstract: For forming a thin ruthenium film of good quality by CVD method, it is necessary to form the thin film at low temperature. There hence is a desire for a ruthenium compound having a high reactivity to heat. This invention relates to a method of producing a ruthenium-containing film by CVD or the like using, as a raw material, a ruthenium complex mixture containing (2,4-dimethylpentadienyl)(ethyl-cyclopentadienyl)ruthenium and bis(2,4-dimethylpentadienyl)ruthenium, the amount of the latter compound being 0.1 to 100% by weight based on the weight of (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium, and the like.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: June 3, 2014
    Assignee: Tosoh Corporation
    Inventors: Atsushi Maniwa, Noriaki Oshima, Kazuhisa Kawano, Taishi Furukawa, Hirokazu Chiba, Toshiki Yamamoto
  • Publication number: 20120227625
    Abstract: For forming a thin ruthenium film of good quality by CVD method, it is necessary to form the thin film at low temperature. There hence is a desire for a ruthenium compound having a high reactivity to heat. This invention relates to a method of producing a ruthenium-containing film by CVD or the like using, as a raw material, a ruthenium complex mixture containing (2,4-dimethylpentadienyl)(ethyl-cyclopentadienyl)ruthenium and bis(2,4-dimethylpentadienyl)ruthenium, the amount of the latter compound being 0.1 to 100% by weight based on the weight of (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium, and the like.
    Type: Application
    Filed: November 29, 2010
    Publication date: September 13, 2012
    Inventors: Atsushi Maniwa, Noriaki Oshima, Kazuhisa Kawano, Taishi Furukawa, Hirokazu Chiba, Toshiki Yamamoto
  • Publication number: 20120029220
    Abstract: A subject for the invention is to provide novel titanium complexes which have a high vapor pressure and high thermal stability and serve as an excellent material for producing a titanium-containing thin film by a technique such as the CVD method or ALD method and to further provide processes for producing these complexes, titanium-containing thin films produced from the complexes, and a process for producing the thin films. The invention relates to producing a titanium complex represented by general formula (1): (wherein R1 and R4 each independently represent an alkyl group having 1-16 carbon atoms; R2 and R3 each independently represent a hydrogen atom or an alkyl group having 1-3 carbon atoms; and R5 represents an alkyl group which has 1-16 carbon atoms and may have been substituted with one or more fluorine atoms) and to producing a titanium-containing thin film using the complex.
    Type: Application
    Filed: June 12, 2009
    Publication date: February 2, 2012
    Applicants: SAGAMI CHEMICAL RESEARCH INSTITUTE, TOSOH CORPORATION
    Inventors: Ken-ichi Tada, Toshiki Yamamoto, Hirokazu Chiba, Kohei Iwanaga, Atsushi Maniwa, Tadahiro Yotsuya, Noriaki Oshima
  • Publication number: 20110224453
    Abstract: This invention aims at providing (2,4-dimethylpentadienyl)-(ethylcyclopentadienyl)ruthenium which may contain its related structure compound, from which a ruthenium-containing thin film can be produced; a method of producing the same; a method of producing the ruthenium-containing thin film using the same; the ruthenium-containing thin film; and the like. The invention relates to producing the thin film using, as a precursor, (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium containing the related structure compound in an amount not more than 5% by weight, which can be obtained by separating the related structure compound from (2,4-dimethylpentadienyl)(ethylcyclopentadienyl)ruthenium containing the related structure compound.
    Type: Application
    Filed: December 21, 2009
    Publication date: September 15, 2011
    Inventors: Taisha Furukawa, Noriaki Oshima, Kazuhisa Kawano, Hirokazu Chiba
  • Publication number: 20110087039
    Abstract: Objects of the present invention are to provide a novel niobium or tantalum complex having good vapor pressure and becoming a raw material for producing a niobium- or tantalum-containing thin film by a method such as CVD method, ALD method or the like, a method for producing the same, a metal-containing thin film using the same, and a method for producing the same. The present invention relates to producing an imide complex represented by the general formula (1) by, for example, the reaction between M1(NR1)X3(L)r (2) and an alkali metal alkoxide (3): (wherein M1 represents niobium atom or tantalum atom, R1 represents an alkyl group having from 1 to 12 carbon atoms, R2 represents an alkyl group having from 2 to 13 carbon atoms, X represents halogen atom, r is 1 when L is 1,2-dimethoxyethane ligand, r is 2 when L is pyridine ligand, and M2 represents an alkali metal), and producing a niobium- or tantalum-containing thin film by using the imide complex (1) as a raw material.
    Type: Application
    Filed: August 20, 2007
    Publication date: April 14, 2011
    Applicants: TOSOH CORPORATION, SAGAMI CHEMICAL RESEARCH CENTER
    Inventors: Ken-ichi TADA, Taishi FURUKAWA, Koichiro INABA, Tadahiro YOTSUYA, Hirokazu CHIBA, Toshiki YAMAMOTO, Tetsu YAMAKAWA, Noriaki OSHIMA
  • Patent number: 7906668
    Abstract: Objects of the present invention are to provide a novel niobium or tantalum complex having good vapor pressure and becoming a raw material for producing a niobium- or tantalum-containing thin film by a method such as CVD method, ALD method or the like, a method for producing the same, a metal-containing thin film using the same, and a method for producing the same. The present invention relates to producing an imide complex represented by the general formula (1) by, for example, the reaction between M1(NR1)X3(L)r (2) and an alkali metal alkoxide (3): (wherein M1 represents niobium atom or tantalum atom, R1 represents an alkyl group having from 1 to 12 carbon atoms, R2 represents an alkyl group having from 2 to 13 carbon atoms, X represents halogen atom, r is 1 when L is 1,2-dimethoxyethane ligand, r is 2 when L is pyridine ligand, and M2 represents an alkali metal), and producing a niobium- or tantalum-containing thin film by using the imide complex (1) as a raw material.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: March 15, 2011
    Assignees: Tosoh Corporation, Sagami Chemical Research Center
    Inventors: Ken-ichi Tada, Taishi Furukawa, Koichiro Inaba, Tadahiro Yotsuya, Hirokazu Chiba, Toshiki Yamamoto, Tetsu Yamakawa, Noriaki Oshima
  • Publication number: 20100010248
    Abstract: Objects of the present invention are to provide a novel niobium or tantalum complex having good vapor pressure and becoming a raw material for producing a niobium- or tantalum-containing thin film by a method such as CVD method, ALD method or the like, a method for producing the same, a metal-containing thin film using the same, and a method for producing the same. The present invention relates to producing an imide complex represented by the general formula (1) by, for example, the reaction between M1(NR1)X3(L)r (2) and an alkali metal alkoxide (3): (wherein M1 represents niobium atom or tantalum atom, R1 represents an alkyl group having from 1 to 12 carbon atoms, R2 represents an alkyl group having from 2 to 13 carbon atoms, X represents halogen atom, r is 1 when L is 1,2-dimethoxyethane ligand, r is 2 when L is pyridine ligand, and M2 represents an alkali metal), and producing a niobium- or tantalum-containing thin film by using the imide complex (1) as a raw material.
    Type: Application
    Filed: August 20, 2007
    Publication date: January 14, 2010
    Applicants: Tosoh Corporation, Sagami Chemical Research Center
    Inventors: Ken-ichi Tada, Taishi Furukawa, Koichiro Inaba, Tadahiro Yotsuya, Hirokazu Chiba, Toshiki Yamamoto, Tetsu Yamakawa, Noriaki Oshima
  • Patent number: 7632958
    Abstract: Objects of the present invention are to provide a novel titanium complex that has good vaporization characteristics and an excellent thermal stability, and becomes a raw material for forming a titanium-containing thin film by methods such as CVD method or ALD method, its production method, a titanium-containing thin film formed using the same, and its formation method. In the invention, a titanium complex represented by the general formula (1) is produced by reacting a diimine represented by the general formula (2) and metallic lithium, and then reacting a tetrakisamide complex represented by the general formula (3). (In the formulae, R1 and R4 represent an alkyl group having from 1 to 6 carbon atoms. R2 and R3 each independently represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms. R5 and R6 each independently represents an alkyl group having from 1 to 4 carbon atoms.).
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: December 15, 2009
    Assignees: Tosoh Corporation, Sagami Chemical Research Center
    Inventors: Ken-ichi Tada, Koichiro Inaba, Taishi Furukawa, Hirokazu Chiba, Tetsu Yamakawa, Noriaki Oshima
  • Publication number: 20090036697
    Abstract: Objects of the present invention are to provide a novel titanium complex that has good vaporization characteristics and an excellent thermal stability, and becomes a raw material for forming a titanium-containing thin film by methods such as CVD method or ALD method, its production method, a titanium-containing thin film formed using the same, and its formation method. In the invention, a titanium complex represented by the general formula (1) is produced by reacting a diimine represented by the general formula (2) and metallic lithium, and then reacting a tetrakisamide complex represented by the general formula (3). (In the formulae, R1 and R4 represent an alkyl group having from 1 to 6 carbon atoms. R2 and R3 each independently represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms. R5 and R6 each independently represents an alkyl group having from 1 to 4 carbon atoms.).
    Type: Application
    Filed: November 1, 2006
    Publication date: February 5, 2009
    Applicants: TOSOH CORPORATION, SAGAMI CHEMICAL RESEARCH CENTER
    Inventors: Ken-ichi Tada, Koichiro Inaba, Taishi Furukawa, Hirokazu Chiba, Tetsu Yamakawa, Noriaki Oshima