Patents by Inventor Masako Chigami

Masako Chigami 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).

  • Coinjection stretch blow molded container
    Patent number: 6720053
    Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance. The containers comprise a thermoplastic polyester layer (layer a) and an ethylene-vinyl alcohol copolymer layer (layer b), with the layer a being kept in direct contact with the both surfaces of the layer b, wherein the ethylene-vinyl alcohol copolymer satisfies the following formulae (1) and (2) and its differential scanning calorimetry (DSC) gives a single peak f or crystal fusion: 25≦ETb≦48  (1) 92≦SDb≦99  (2) wherein ETb indicates the ethylene content (mol %) of the ethylene-vinyl alcohol copolymer, and SDb indicates the degree of saponification (%) of the ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: April 13, 2004
    Assignee: Kuraray Co., Ltd.
    Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami
  • Coinjection stretch blow molded container
    Patent number: 6677017
    Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance. The containers comprise a thermoplastic polyester layer (layer a) and an ethylene-vinyl alcohol copolymer layer (layer b), with the layer a being kept in direct contact with the both surfaces of the layer b, wherein the ethylene-vinyl alcohol copolymer satisfies the following formulae (1) and (2) and its differential scanning calorimetry (DSC) gives a single peak for crystal fusion: 25≦ETb≦48  (1) 92≦SDb≦99  (2) wherein ETb indicates the ethylene content (mol %) of the ethylene-vinyl alcohol copolymer, and SDb indicates the degree of saponification (%) of the ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: January 13, 2004
    Assignee: Kuraray Co., Ltd.
    Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami
  • Coinjection stretch blow molded container
    Publication number: 20020064617
    Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance.
    Type: Application
    Filed: July 23, 2001
    Publication date: May 30, 2002
    Applicant: Kuraray Co., Ltd.
    Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami
  • Coinjection stretch blow molded container
    Patent number: 6395358
    Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance. The containers comprise a thermoplastic polyester layer (layer a) and an ethylene-vinyl alcohol copolymer layer (layer b), with the layer a being kept in direct contact with the both surf aces of the layer b, wherein the ethylene-vinyl alcohol copolymer satisfies the following formulae (1) and (2) and its differential scanning calorimetry (DSC) gives a single peak f or crystal fusion: 25≦ETb≦48  (1) 92≦SDb≦99  (2) wherein ETb indicates the ethylene content (mol %) of the ethylene-vinyl alcohol copolymer, and SDb indicates the degree of saponification (%) of the ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: May 28, 2002
    Assignee: Kuraray Co., Ltd.
    Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami
  • Coinjection stretch blow molded container
    Publication number: 20020037379
    Abstract: Coinjection stretch blow molded containers containing thermoplastic polyester resin and an EVOH resin are obtained, which have greatly improved impact delamination resistance.
    Type: Application
    Filed: July 23, 2001
    Publication date: March 28, 2002
    Applicant: Kuraray Co., Ltd.
    Inventors: Shinji Tai, Hiroyuki Shimo, Nahoto Hayashi, Masako Chigami