Patents by Inventor Hiroaki Itagaki

Hiroaki Itagaki 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).

  • Non-aqueous electrolytic solution and secondary battery containing same
    Patent number: 6767671
    Abstract: A non-aqueous electrolytic solution capable of depressing deterioration of battery properties in a high temperature environment is provided. A secondary battery is also provided. The non-aqueous electrolytic solution containing at least an organic solvent and a lithium salt further contains a particular pyridine compound.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: July 27, 2004
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroaki Itagaki, Chikara Kiyohara
  • Non-aqueous electrolytic solution and secondary battery containing same
    Publication number: 20020025477
    Abstract: A non-aqueous electrolytic solution capable of depressing deterioration of battery properties in a high temperature environment is provided. A secondary battery is also provided. The non-aqueous electrolytic solution containing at least an organic solvent and a lithium salt further contains a particular pyridine compound.
    Type: Application
    Filed: July 13, 2001
    Publication date: February 28, 2002
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hiroaki Itagaki, Chikara Kiyohara
  • Process for producing aldehydes and bisphosphite compound to be used for the process
    Patent number: 6172267
    Abstract: A process for producing aldehydes, which comprises reacting a mono-olefinic compound with carbon monoxide and hydrogen in the presence of a Group VIII transition metal compound of a bisphosphite compound of the following formula (1) or (2)
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: January 9, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hisao Urata, Yasuhiro Wada, Yoshiyuki Tanaka, Naoki Suzuki, Hiroaki Itagaki
  • Bisphosphite compound, process for its production and hydroformylation process employing the bisphosphite compound
    Patent number: 5910600
    Abstract: A bisphosphite compound of the following formula (A): ##STR1## wherein --Ar--Ar-- is a bisarylene group represented by any one of the formulae (A-I) to (A-III) defined in the specification, and each of Z.sub.1 to Z.sub.4 is a C.sub.4-20 aromatic or heteroaromatic group which may have a substituent, wherein each of substituents on carbon atoms of an aromatic ring adjacent to the carbon atom bonded to the oxygen atom in each of Z.sub.1 to Z.sub.4, is a C.sub.0-2 group, and each pair of Z.sub.1 and Z.sub.2, and Z.sub.3 and Z.sub.4, are not bonded to each other.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: June 8, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hisao Urata, Hiroaki Itagaki, Eitaro Takahashi, Yasuhiro Wada, Yoshiyuki Tanaka, Yasukazu Ogino