Patents by Inventor Masafumi SHIBAHARA

Masafumi SHIBAHARA 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).

  • Publication number: 20210146662
    Abstract: An object of the present invention is to provide a layered product of a polymer layer made of PTFE or the like and the rubber, with further improvement in the adhesiveness between the polymer layer and the rubber layer. A layered product in which a fluorine-containing polymer compound layer and a rubber layer formed from a rubber composition are stacked, wherein the fluorine-containing polymer compound is polytetrafluoroethylene or a copolymer of a difluoromethylene unit and at least one of a hexafluoropropylene unit, a perfluoroalkyl vinyl ether unit, a methylene unit, an ethylene unit, and a perfluorodioxole unit, and the rubber layer contains SiO2.
    Type: Application
    Filed: May 31, 2018
    Publication date: May 20, 2021
    Applicant: OSAKA UNIVERSITY
    Inventors: Yuji OHKUBO, Kazuya YAMAMURA, Kento ISHIHARA, Masafumi SHIBAHARA, Asahiro NAGATANI, Koji HONDA
  • Patent number: 10730253
    Abstract: An object of the present invention is to provide a process for producing a surface-modified molded article, whereby surface layer strength of a molded article can be enhanced, and a molded article containing an organic polymer compound with low adhesive property, such as a fluororesin, can be bonded to an adherend without the use of an adhesive, and whereby a treatment step or an apparatus in an atmospheric-pressure plasma treatment are not complicated, and to provide a process for producing a composite of the surface-modified molded article and an adherend. The present invention is a process for producing a surface-modified molded article wherein a surface of the molded article containing an organic polymer compound is subjected to an atmospheric pressure plasma treatment to introduce a peroxide radical with adjusting the surface temperature of the molded article to (melting point of the organic polymer compound ?120° C. or higher.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 4, 2020
    Assignee: OSAKA UNIVERSITY
    Inventors: Kazuya Yamamura, Yuji Ohkubo, Kento Ishihara, Masafumi Shibahara, Asahiro Nagatani, Koji Honda
  • Publication number: 20170282469
    Abstract: An object of the present invention is to provide a process for producing a surface-modified molded article, whereby surface layer strength of a molded article can be enhanced, and a molded article containing an organic polymer compound with low adhesive property, such as a fluororesin, can be bonded to an adherend without the use of an adhesive, and whereby a treatment step or an apparatus in an atmospheric-pressure plasma treatment are not complicated, and to provide a process for producing a composite of the surface-modified molded article and an adherend. The present invention is a process for producing a surface-modified molded article wherein a surface of the molded article containing an organic polymer compound is subjected to an atmospheric pressure plasma treatment to introduce a peroxide radical with adjusting the surface temperature of the molded article to (melting point of the organic polymer compound ?120° C. or higher.
    Type: Application
    Filed: September 4, 2015
    Publication date: October 5, 2017
    Applicant: OSAKA UNIVERSITY
    Inventors: Kazuya YAMAMURA, Yuji OHKUBO, Kento ISHIHARA, Masafumi SHIBAHARA, Asahiro NAGATANI, Koji HONDA