Patents by Inventor Yoshinori Negishi

Yoshinori Negishi 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).

  • Polyester resin container with improved weatherability
    Patent number: 7132499
    Abstract: A polyester resin container with improved weatherability as well as colorlessness and heat resistance, made of a polyester resin composition comprising (A) 100 parts by weight of a polyester resin and (B) 0.01 to 10 parts by weight of a triazine ultraviolet absorber represented by formula (I): wherein R1 represents a straight-chain or branched alkyl group having 1 to 17 carbon atoms, which may have an alicyclic group at the terminal or in the chain thereof; and R2, R2?, R3, and R3? each represent a hydrogen atom or a methyl group.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: November 7, 2006
    Assignee: Asahi Denka Co., Ltd.
    Inventors: Etsuo Tobita, Yoshinori Negishi, Takahiro Horikoshi
  • Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same
    Patent number: 7125920
    Abstract: The present invention relates to an ultraviolet absorber for synthetic resins composed of a triazine compound represented by the general formula (I) shown below (wherein R represents an alkyl group having 1 to 4 carbon atoms, n is 0 or an integer of up to 2, and X represents a group selected from the consisting of group (a) to (d) shown below) (wherein R1 represents an aliphatic group having 5 to 60 carbon atoms, which is an alicyclic group, an alkyl group having an alicyclic group at the terminal or in the chain thereof, an alkyl group having a branch, or a linear alkyl group, depending on the number of carbon atoms; R2 represents an alkyl group having 1 to 18 carbon atoms or a (poly)alkyleneoxyalkyl group; R? represents an aliphatic diyl group having 5 to 60 carbon atoms; R and n have the same meanings as those described in the general formula (I) above).
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: October 24, 2006
    Assignee: Asahi Denka Kogyo K.K.
    Inventors: Yoshinori Negishi, Etsuo Tobita, Takashi Ayabe
  • Polyester resin container with improved weatherability
    Publication number: 20050282995
    Abstract: A polyester resin container with improved weatherability as well as colorlessness and heat resistance, made of a polyester resin composition comprising (A) 100 parts by weight of a polyester resin and (B) 0.01 to 10 parts by weight of a triazine ultraviolet absorber represented by formula (I): wherein R1 represents a straight-chain or branched alkyl group having 1 to 17 carbon atoms, which may have an alicyclic group at the terminal or in the chain thereof; and R2, R2?, R3, and R3? each represent a hydrogen atom or a methyl group.
    Type: Application
    Filed: May 18, 2005
    Publication date: December 22, 2005
    Applicant: ASAHI DENKA CO., LTD.
    Inventors: Etsuo Tobita, Yoshinori Negishi, Takahiro Horikoshi
  • Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same
    Publication number: 20040099849
    Abstract: The present invention relates to an ultraviolet absorber for synthetic resins composed of a triazine compound represented by the general formula (I) shown below 1
    Type: Application
    Filed: May 28, 2003
    Publication date: May 27, 2004
    Inventors: Yoshinori Negishi, Etsuo Tobita, Takashi Ayabe