Patents by Inventor Yoshitomo Denpou

Yoshitomo Denpou 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).

  • Cationically curable resin composition for assembling hard disk devices
    Patent number: 9546306
    Abstract: The present invention provides a cationically curable resin composition for assembling hard disk devices which comprises a resin having a cationically polymerizable functional group (a component A) and a cationic polymerization initiator (a component B), the component B being at least one selected from the group consisting of X+(SbF6)?(B1), X+(B(C6F5)4)?(B2) and X+((Rf)nPF6-n)?(B3) (in the formulae, X+ is iodonium or sulfonium, Rf is a fluorinated alkyl having 1 to 6 carbon atoms, and n is an integer of 1 to 6). The invention also provides a hard disk device manufacturing method using the composition, and a hard disk device assembled with the composition.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: January 17, 2017
    Assignee: KYORITSU CHEMICAL & CO., LTD.
    Inventors: Shigeki Toyama, Yoshitomo Denpou
  • CATIONICALLY CURABLE RESIN COMPOSITION FOR ASSEMBLING HARD DISK DEVICES
    Publication number: 20140316081
    Abstract: The present invention provides a cationically curable resin composition for assembling hard disk devices which comprises a resin having a cationically polymerizable functional group (a component A) and a cationic polymerization initiator (a component B), the component B being at least one selected from the group consisting of X+(SbF6)?(B1), X+(B(C6F5)4)?(B2) and X+((Rf)nPF6-n)?(B3) (in the formulae, X+ is iodonium or sulfonium, Rf is a fluorinated alkyl having 1 to 6 carbon atoms, and n is an integer of 1 to 6). The invention also provides a hard disk device manufacturing method using the composition, and a hard disk device assembled with the composition.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 23, 2014
    Applicant: KYORITSU CHEMICAL & CO., LTD.
    Inventors: Shigeki Toyama, Yoshitomo Denpou