Patents by Inventor Tetsuto NAKAJIMA

Tetsuto NAKAJIMA 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).

  • Heat shrink tube and method for producing the same
    Patent number: 10661497
    Abstract: An object of the present invention is to provide a heat shrink tube excellent in peelability and transparency, and a method for producing the heat shrink tube. The present invention provides a peelable heat shrink tube comprising a composition containing a melt-processable fluororesin and PTFE, the PTFE lacking a heat history of its melting point or higher after polymerization and having a specific gravity, as measured according to ASTM D4894, of 2.20 or less. The content of the PTFE is 0.05 to 3.0 wt % based on the total weight of the melt-processable fluororesin and the PTFE. The present invention also provides a method for producing the tube which comprises melt-extruding the composition at a temperature lower than the melting point of the PTFE.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 26, 2020
    Assignees: NISSEI ELECTRIC CO., LTD., DUPONT-MITSUI FLUORCHEMICALS CO., LTD.
    Inventors: Hideki Kikuchi, Tetsuto Nakajima, Daisuke Tanaka, Takao Nishio, Etsuya Taki, Hoai-Nam Pham
  • HEAT SHRINK TUBE AND METHOD FOR PRODUCING SAME
    Publication number: 20180186062
    Abstract: An object of the present invention is to provide a heat shrink tube excellent in peelability and transparency, and a method for producing the heat shrink tube. The present invention provides a peelable heat shrink tube comprising a composition containing a melt-processable fluororesin and PTFE, the PTFE lacking a heat history of its melting point or higher after polymerization and having a specific gravity, as measured according to ASTM D4894, of 2.20 or less. The content of the PTFE is 0.05 to 3.0 wt % based on the total weight of the melt-processable fluororesin and the PTFE. The present invention also provides a method for producing the tube which comprises melt-extruding the composition at a temperature lower than the melting point of the PTFE.
    Type: Application
    Filed: June 15, 2016
    Publication date: July 5, 2018
    Applicants: NISSEI ELECTRIC CO., LTD., DUPONT-MITSUI FLUOROCHEMICALS CO., LTD.
    Inventors: Hideki KIKUCHI, Tetsuto NAKAJIMA, Daisuke TANAKA, Takao NISHIO, Etsuya TAKI, Hoai-Nam PHAM