Patents by Inventor Atsuo Tatsumi

Atsuo Tatsumi 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 epoxy resin composition
    Patent number: 8853734
    Abstract: Provided are: a curable epoxy resin composition including an alicyclic epoxy compound (A), a monoallyl diglycidyl isocyanurate compound (B) represented by following Formula (1) where each of R1s and R2 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and a curing agent (C) or curing catalyst (D); and a cured article obtained through curing of the curable epoxy resin composition. The alicyclic epoxy compound (A) preferably has cyclohexene oxide group as the alicyclic epoxy group.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Daicel Corporation
    Inventors: Hiroto Takenaka, Atsuo Tatsumi
  • CURABLE EPOXY RESIN COMPOSITION
    Publication number: 20120248498
    Abstract: Provided are: a curable epoxy resin composition including an alicyclic epoxy compound (A), a monoallyl diglycidyl isocyanurate compound (B) represented by following Formula (1) where each of R1s and R2 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and a curing agent (C) or curing catalyst (D); and a cured article obtained through curing of the curable epoxy resin composition. The alicyclic epoxy compound (A) preferably has cyclohexene oxide group as the alicyclic epoxy group.
    Type: Application
    Filed: January 21, 2011
    Publication date: October 4, 2012
    Applicant: DAICEL CORPORATION
    Inventors: Hiroto Takenaka, Atsuo Tatsumi
  • Process for producing organic peroxides
    Patent number: 6768030
    Abstract: A process of the invention allows a cycloalkane to react with oxygen in the presence of a catalytic imide compound having an N-hydroxy (or N-oxo) cyclic imide skeleton and thereby yields a corresponding bis(1-hydroxycycloalkyl) peroxide. The catalytic imide compound includes, for example, a compound represented by following Formula (1): wherein R1 and R2 are each, for example, a hydrogen atom, a halogen atom, an alkyl group, an aryl group or a cycloalkyl group, where R1 and R2 may be combined to form a double bond, an aromatic or non-aromatic ring; and X is an oxygen atom or a hydroxyl group. The cycloalkane includes, for example, a cycloalkane having from 5 to 15 members. The invention can easily produce bis(1-hydroxycycloalkyl) peroxide from an inexpensive material.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: July 27, 2004
    Assignee: Daicel Corporation Industries, Ltd.
    Inventors: Yasutaka Ishii, Tatsuya Nakano, Atsuo Tatsumi
  • Process for producing organic peroxides
    Publication number: 20040039215
    Abstract: A process of the invention allows a cycloalkane to react with oxygen in the presence of a catalytic imide compound having an N-hydroxy (or N-oxo) cyclic imide skeleton and thereby yields a corresponding bis(1-hydroxycycloalkyl)peroxide.
    Type: Application
    Filed: May 13, 2003
    Publication date: February 26, 2004
    Inventors: Yasutaka Ishii, Tatsuya Nakano, Atsuo Tatsumi